Common industry questions

Our Complete Home Services Expert FAQ Guide

Electrical Top Questions

What is the difference between a fuse and a circuit breaker?

Fuses and circuit breakers both protect your electrical system from overloading. A fuse melts when overloaded and must be discarded, whereas a circuit breaker flips a switch that we can easily reset.

Manufacturer Warranty Note: Brand-new electrical panels and their enclosed circuit breakers typically carry a 1-year to 5-year manufacturer warranty on parts, though premium panels from brands like Square D or Eaton often offer limited lifetime coverage on the copper bus bars when installed by our licensed team.

How can I tell if my home’s electrical panel is overloaded?

Look for frequent breaker trips, dimming lights, crackling sounds from the box, or a panel door that feels warm. If you notice these, we recommend scheduling an emergency panel evaluation immediately.

Manufacturer Warranty Note: If we determine you need a completely new electrical panel, standard residential panels feature a 2-year to 10-year manufacturer warranty depending on the tier. Failing to hire a licensed electrician voids this factory coverage entirely.

Why do my lights flicker or dim when an appliance turns on?

Large appliances draw heavy current upon starting. If your lights flicker, they are likely sharing a circuit with that appliance, or your electrical panel lacks the total capacity to support your home's concurrent power demands.

What causes a GFCI outlet to keep tripping?

Ground Fault Circuit Interrupters (GFCIs) trip when they detect a leakage of current to the ground, often caused by moisture, a faulty connected appliance, or a deteriorating internal sensor within the outlet itself.

Manufacturer Warranty Note: Reputable GFCI outlet brands (like Leviton or Lutron) offer a 1-year to 2-year limited manufacturer warranty. They explicitly do not cover internal component damage caused by external lightning strikes or improper DIY wiring.

Are extension cords safe for permanent use?

No, extension cords are strictly designed for temporary use. Over time, their insulation degrades under continuous load, creating a severe fire hazard that code compliance requires us to solve with permanent outlets.

Manufacturer Warranty Note: Heavy-duty extension cords carry a 90-day to 1-year manufacturer warranty that explicitly specifies coverage is voided if the cord is used as permanent wiring or left outdoors indefinitely.

How many outlets should be on a single 15-amp circuit?

We follow the standard industry practice of placing no more than 8 to 10 outlets on a single 15-amp circuit to prevent residential overloads and frequent breaker tripping.

Manufacturer Warranty Note: Standard duplex receptacles are highly affordable components backed by a basic 1-year manufacturer warranty against factory material defects.

What is the difference between a two-prong and a three-prong outlet?

Two-prong outlets lack a grounding wire, exposing you to shock risks. Three-prong outlets feature a dedicated ground wire that safely channels excess electricity away from you and your appliances.

Why do some of my outlets feel hot to the touch?

An outlet that feels warm or hot indicates loose terminal wiring, an unsafe electrical overload, or an active internal short circuit. We treat this as a high-priority fire risk that requires immediate professional repair.

What is an arc-fault circuit interrupter (AFCI)?

An AFCI is an advanced safety breaker designed to detect dangerous, unintended electrical arcing—the primary cause of electrical home fires—and cut power before a fire can ignite.

Manufacturer Warranty Note: Due to their sophisticated internal microprocessors, AFCI breakers are premium safety products that usually come with an extended 5-year to lifetime manufacturer warranty, provided they haven't been exposed to moisture or physical abuse.

How often should I have my home's electrical system inspected?

We advise homeowners to invest in a comprehensive electrical inspection every 3 to 5 years, or immediately upon purchasing a new home or experiencing repeated breaker trips.

What is the lifespan of residential electrical wiring?

Standard copper residential wiring lasts between 50 and 70 years. However, older wire insulation can crack and fail sooner, requiring proactive whole-home rewiring.

Manufacturer Warranty Note: Bulk electrical building wire (like Romex/NM-B) is technically backed by a 1-year manufacturer warranty against immediate physical factory defects, though the physical copper itself naturally lasts for many decades.

Why do my lightbulbs burn out so quickly?

Frequent burnouts usually stem from loose fixture connections, excessive whole-home supply voltage, poor household ventilation within recessed fixtures, or buying low-quality bulb brands.

Manufacturer Warranty Note: Modern LED lightbulbs feature a 3-year to 5-year manufacturer warranty. To submit a successful warranty claim to the manufacturer, you must present the original store receipt showing the purchase date.

Can I replace a light switch or outlet myself?

While simple component swaps seem straightforward, code compliance and safety hazards are high. We always urge homeowners to rely on our licensed electricians to guarantee secure, risk-free installations.

Manufacturer Warranty Note: Standard wall switches carry a 1-year to 2-year manufacturer warranty. This factory protection is legally void if the product fails due to uncertified DIY installation errors.

What are the signs of faulty electrical wiring?

Keep an eye out for persistent burning smells, unexplainable buzzing sounds behind walls, charred or discolored outlet faces, and frequent, unprovoked shocks from switches.

What should I do if an outlet stops working entirely?

First, check your main electrical panel for a tripped breaker and test nearby GFCI reset buttons. If the outlet remains dead, contact us to trace the underlying broken wire connection.

Why does a specific circuit breaker keep tripping?

A recurring trip indicates either a localized circuit overload from drawing too much power, a severe short circuit, or a worn-out breaker switch that our team needs to replace.

Is aluminum wiring dangerous in older homes?

Yes, aluminum wiring used heavily in the 1960s and 1970s poses a known fire hazard. Its connections expand and contract rapidly, loosening over time and requiring professional remediation.

What is a whole-home surge protector and do I need one?

It is a heavy-duty safety device we install directly into your main electrical panel. It blocks massive external voltage spikes from lightning strikes, protecting your expensive electronics instantly.

Manufacturer Warranty Note: Quality surge units offer a 3-year to 5-year manufacturer warranty that often includes a connected-equipment warranty ranging from $25,000 to $75,000 to replace downstream electronics ruined by a failed surge device.

What is a dedicated circuit and which appliances need them?

A dedicated circuit serves exactly one major appliance to prevent overloads. We install them for high-draw units like refrigerators, HVAC systems, dryers, and electric vehicle chargers.

How do I reset a tripped circuit breaker safely?

Locate the panel, identify the switch stuck between 'On' and 'Off', push it firmly to the 'Off' position until it clicks, and then flip it back to 'On'.

Furnaces Top Questions

How long do standard gas furnaces typically last?

A well-maintained gas furnace typically delivers reliable service for 15 to 20 years before physical wear forces a replacement.

What does a manufacturer warranty cover on a furnace?

Most leading brands offer a 5-year to 10-year manufacturer warranty on functional parts, and a 20-year to limited lifetime manufacturer warranty on the heat exchanger. Note: Manufacturers like Carrier, Rheem, and Trane explicitly require professional licensed installation and mandatory online product registration within 60 days of setup to honor these extended windows [Fire & Ice FAQ (0.5.2), Rheem HVAC 101 (0.5.14)].

How often should I change my furnace filter?

We recommend changing standard 1-inch filters every 30 to 90 days. Thicker media filters can last 6 to 12 months depending on household pet hair and dust levels.

Manufacturer Warranty Note: Disposable filters do not carry extended warranties, but premium reusable or electronic air filter frames include a 1-year to 5-year manufacturer warranty protecting against structural defects.

Why is my furnace blowing cold air?

This issue often stems from a dirty flame sensor, a tripped high-limit switch due to a clogged air filter, or a pilot light/igniter failure that prevents gas combustion.

Manufacturer Warranty Note: Replacement functional parts like igniters or flame sensors carry a brief 90-day to 1-year manufacturer warranty when purchased individually through an authorized local supplier.

What does the AFUE rating mean on a furnace?

Annual Fuel Utilization Efficiency (AFUE) measures heating efficiency. An 80% AFUE furnace converts 80% of its fuel to usable heat, while venting 20% away, whereas a high-efficiency 96% unit saves far more energy.

Manufacturer Warranty Note: High-efficiency condensing furnaces (90%+ AFUE) utilize secondary stainless steel heat exchangers which universally carry a longer 20-year to lifetime manufacturer warranty compared to standard mid-efficiency models.

Why is my furnace making a loud banging or clanking noise?

A loud bang at startup usually indicates delayed ignition, where gas builds up before catching fire. Clanking implies a loose internal blower wheel component that requires immediate attention.

Manufacturer Warranty Note: Main blower assembly motors are covered under your equipment's standard 5-year to 10-year factory parts warranty, provided the motor didn't fail due to chronic airflow restriction from a neglected filter.

Should I leave my furnace fan on "Auto" or "On"?

We suggest "Auto" for maximum energy savings and humidity control. The "On" position runs the fan continuously, providing better filtration but increasing your electric bill.

What is the difference between a single-stage and two-stage furnace?

A single-stage furnace runs at 100% capacity whenever it turns on. A two-stage furnace runs at a lower, quieter speed for mild days and kicks into high speed only during extreme cold.

Manufacturer Warranty Note: Advanced multi-stage or modulating gas valves and variable-speed blower motors enjoy identical 10-year manufacturer warranty coverage as single-stage components, but they are significantly more expensive to replace if your system falls out of warranty.

How much does it cost to repair a cracked heat exchanger?

Because a cracked heat exchanger presents deadly carbon monoxide risks, we cannot simply patch it. Replacing it is highly labor-intensive and often expensive enough that we recommend replacing the entire furnace if it is out of warranty.

Manufacturer Warranty Note: If your heat exchanger cracks within its 20-year manufacturer warranty window, the manufacturer provides the new steel component for free, but you are still responsible for paying our technician's local labor costs to swap it out.

Why does my furnace smell like burning when I turn it on for the first time?

This is completely normal. Dust settles on the heating elements during summer months, and what you smell is that dust burning off harmlessly during the initial cycle.

What is the best temperature to set my thermostat to in the winter?

For an optimal balance of comfort and energy savings, we recommend setting your thermostat to 68°F (20°C) while you are awake at home.

Manufacturer Warranty Note: Digital thermostats packaged with your system are usually covered by a separate 1-year to 5-year manufacturer warranty depending on the specific model.

Why does my furnace turn on and off frequently?

This behavior is called short-cycling. It is usually triggered by an oversized heating unit, a severely clogged air filter overheating the system, or a faulty thermostat sensor.

How do I know if my furnace needs to be repaired or replaced?

If your furnace is over 15 years old, faces repair costs exceeding 50% of its total value, or your heating bills are climbing, we recommend planning an upgrade.

Can an electric furnace heat a home as well as a gas furnace?

Yes, electric furnaces heat homes effectively, but they cost significantly more to operate monthly than natural gas units in regions experiencing harsh winter climates.

Manufacturer Warranty Note: Electric furnaces contain heavy-duty open-coil heating elements that typically carry a 5-year to 10-year manufacturer warranty on parts, though they lack the expensive heat exchangers found in gas units.

Why won't my furnace turn on at all?

Check for a flipped breaker, a blown fuse on the control board, or a misconfigured thermostat. If those look good, the system may be locked out due to an internal safety switch failure.

Manufacturer Warranty Note: Integrated Furnace Control (IFC) circuit boards are fully covered under your system's base 5-year to 10-year factory warranty, but they can be instantly fried by house wide electrical surges, which manufacturers do not cover.

What is the blinking light (LED code) on my furnace trying to tell me?

That light flashes a specific diagnostic error code sequence. We use the manufacturer's reference guide to pinpoint exactly which sensor or motor is malfunctioning.

Do furnaces require annual maintenance?

Yes. Regular annual safety cleanings are necessary to keep your system operating safely, prevent carbon monoxide leaks, and keep your manufacturer warranty active. Nearly all brands state that neglecting annual service voids your parts coverage.

What should I do if I smell gas near my furnace?

Evacuate your household immediately. Do not flip any light switches or use your phone inside. Call your local gas company or emergency services from safely outside.

Is it normal for my furnace to produce water?

High-efficiency, condensing furnaces naturally produce water during operation, abstracting moisture through a dedicated condensate drain line. Standard 80% furnaces should never produce water.

Manufacturer Warranty Note: The specialized internal plastic condensate collection pans and drainage traps are covered under the 5-year to 10-year manufacturer warranty against cracking or structural leaks.

How can I lower my heating bills during the winter?

We advise upgrading to a programmable smart thermostat, sealing drafty windows and doors, and keeping your air filters clean to maximize airflow efficiency.

AC / Mini-Splits Top Questions

What is the difference between central air and a ductless mini-split?

Central air utilizes centralized duct networks to condition your whole home. Mini-splits are entirely ductless, using small wall-mounted indoor units to deliver targeted zoning comfort directly to individual spaces [Amana HAC (0.5.6), Rewiring America (0.5.13)].

Manufacturer Warranty Note: Central air conditioners and mini-splits generally offer separate component coverage: compressors carry a 5-year to 10-year manufacturer warranty, while the indoor and outdoor coils carry a matching parts window.

How long do ductless mini-split systems last?

With routine maintenance, a high-quality ductless mini-split system provides reliable climate control for 15 to 20 years.

What is the manufacturer warranty on AC units and mini-splits?

Standard factory warranties generally provide a 5-year to 10-year manufacturer warranty on functional parts. Note: Top-tier mini-split brands (like Mitsubishi or Daikin) will extend this to a 10-year to 12-year manufacturer warranty if installed by our certified contractors and registered online within 60 days of installation. Failing to register defaults your equipment back to a basic 5-year window.

Why is my air conditioner leaking water inside my home?

This is typically caused by a clogged condensate drain line backed up with slime or algae, a cracked drain pan, or a frozen evaporator coil that is rapidly thawing out.

What does a SEER rating mean for energy efficiency?

SEER (Seasonal Energy Efficiency Ratio) measures cooling efficiency. Higher SEER numbers indicate a system translates electricity into cooling power more efficiently, lowering your energy costs.

Why is my outdoor AC unit freezing up?

Freezing occurs when restricted airflow prevents warm air from reaching the refrigerant coils—often due to a clogged air filter—or when your system runs low on refrigerant.

How often should I clean the filters on a mini-split?

We advise homeowners to clean their washable mini-split filters every 4 to 6 weeks, as their compact size causes them to collect household dust rapidly.

Manufacturer Warranty Note: These specialized mesh mini-split filters are washable and designed to last the lifetime of the unit, but if physically torn, they are treated as consumable accessories and carry a brief 30-day to 90-day manufacturer warranty.

Can one outdoor unit power multiple indoor mini-split heads?

Yes, multi-zone multi-split outdoor compressors are designed to power anywhere from two to up to eight individual indoor air handlers independently.

Manufacturer Warranty Note: In a multi-zone layout, the central outdoor compressor unit carries a 7-year to 10-year manufacturer warranty, while each individual indoor wall unit is protected under its own parts warranty coverage window.

Why is my AC blowing warm air?

Check for a dirty outdoor condenser unit, an incorrect thermostat setting, or a tripped outdoor breaker. If the fan runs but stays warm, it often points to a compressor failure or refrigerant leak.

Manufacturer Warranty Note: The outdoor AC compressor is the core pump of your system and carries a 5-year to 10-year manufacturer warranty. Replacing a compressor out of warranty is highly expensive, often prompting a full equipment swap.

Is it normal for a mini-split to make a clicking or hissing noise?

Mild clicking comes from the plastic casing expanding and contracting with temperature changes. Hissing usually points to refrigerant flowing through the lines, though loud hissing can signify a leak.

Do mini-splits also provide heat?

Yes, most mini-split systems operate as heat pumps, allowing them to reverse their cooling cycle to pull ambient outdoor heat inside during cold weather [Rewiring America (0.5.13)].

Manufacturer Warranty Note: The reversing valve that changes the unit from cooling to heating mode is a vital internal component protected by the standard 5-year to 10-year manufacturer parts warranty.

What size mini-split do I need for my room or addition?

We calculate size using BTUs based on the square footage of your space. A typical 400-square-foot room generally requires a 9,000 to 12,000 BTU unit [Angi (0.5.9)].

Why is my AC unit making a loud screeching noise?

A loud screech usually points to high pressure building up within your compressor or a failing outdoor condenser fan motor bearing that requires immediate attention.

Manufacturer Warranty Note: Outdoor condenser fan motors carry a 5-year to 10-year manufacturer warranty. Physical damage caused by falling tree ice or foreign objects protruding through the top grille is excluded from warranty coverage.

What is involved in the mini-split installation process?

We mount the indoor unit, drill a small 3-inch hole through your wall, run the necessary refrigerant and electrical lines outside, set the compressor, and seal the connections.

Manufacturer Warranty Note: The external copper line sets used during installation are third-party accessories that usually carry a 1-year manufacturer warranty against structural cracks or pinhole defects.

How much electricity does a mini-split use compared to baseboard heat?

Mini-splits use advanced inverter technology, consuming up to 50% to 60% less electricity than traditional, inefficient electric baseboard heaters [Rewiring America (0.5.13)].

Manufacturer Warranty Note: The highly complex inverter control boards inside mini-splits are protected by a 5-year to 10-year manufacturer warranty. We always install an outdoor surge protector to prevent lightning from frying these sensitive, costly parts.

Do I need to worry about the drain line on my mini-split?

Yes, gravity-fed or pump-assisted mini-split drains must remain clear. A clogged line causes water to overflow down your interior drywall.

Manufacturer Warranty Note: If your specific installation requires an internal mini-split condensate lift pump, these auxiliary pumps carry an independent 1-year to 2-year manufacturer warranty that does not cover slime clogs from poor maintenance.

How often should I schedule professional AC maintenance?

We strongly urge booking a professional system tune-up once a year in early spring to clean coils, check electrical draw, and ensure peak performance before summer peaks.

Can I install a ductless mini-split myself?

We heavily advise against it. Handling refrigerant requires specialized EPA certification, specialized tools, and precise electrical integration to avoid voiding your manufacturer warranty. Nearly all HVAC manufacturers explicitly deny warranty parts claims on equipment installed by unlicensed individuals.

Why won't my air conditioner turn on?

Common causes include a completely full condensate safety overflow pan, a blown outdoor disconnect fuse, or a failed compressor contactor.

Manufacturer Warranty Note: Low-voltage parts like standard electrical contactors or capacitors carry a basic 5-year to 10-year manufacturer warranty as part of the total equipment package when installed as original components.

What is the best thermostat temperature for summer?

We recommend setting your thermostat to 78°F (25°C) when you are home to balance personal comfort with cost-effective energy conservation.

Plumbing Top Questions

How long do traditional water heaters last?

Standard storage tank water heaters generally last between 8 and 12 years, while modern tankless units can deliver service for up to 20 years.

What is the manufacturer warranty on a water heater?

Most major brands (like Rheem, AO Smith, or Bradford White) provide a 6-year to 12-year manufacturer warranty on the physical steel tank shell, and a 1-year to 5-year manufacturer warranty on parts. Note: To keep this protection active, manufacturers require regular tank flushes and checkups of the sacrificial anode rod to prevent premature rust.

Why is my water bill suddenly so high?

An unexplainable spike usually means an active leak, most commonly a silent running toilet leak or a hidden underground pipe leak under your concrete slab.

What is the safest way to unclog a drain without harsh chemicals?

We suggest using a standard rubber plunger or a manual drain snake. Avoid chemical pour-in cleaners, as their corrosive formulas eat away at your internal plumbing pipes.

Manufacturer Warranty Note: Professional plumbing drain snakes and hand augers used by homeowners carry a 1-year manufacturer warranty covering steel cable breaks, but excluding damage from forcing the cable beyond its physical capacity.

Why do my pipes make a loud banging noise when I turn off the faucet?

This phenomenon is known as water hammer. It happens when fast-closing valves suddenly stop water flow, creating a shockwave we solve by installing water hammer arrestors.

Manufacturer Warranty Note: Premium inline water hammer arrestors include a 1-year to 5-year manufacturer warranty against internal chamber seal failures.

How can I tell if I have a hidden water leak in my home?

Turn off every faucet and water appliance in your house, then check your main water meter. If the dial or digital read-out keeps moving, water is actively escaping somewhere.

Manufacturer Warranty Note: Municipal or residential water meters carry a 5-year to 10-year manufacturer warranty on internal accurate calibration, though they are usually owned and maintained directly by your city water department.

Why does my water smell like rotten eggs?

This distinct smell is usually caused by sulfur bacteria growing inside your water heater tank. We typically resolve this by flushing the system and replacing a degraded anode rod.

Manufacturer Warranty Note: Replacement magnesium or aluminum sacrificial anode rods carry a basic 1-year manufacturer warranty against structural defects, but are naturally designed to degrade over time to save your tank.

What should I do if my main sewer line is backed up?

Stop running all water immediately to prevent hazardous waste overflow. Call us right away so we can deploy a sewer camera and clean out the blockage safely.

How often should I get my plumbing system inspected?

We recommend scheduling a preventative professional plumbing inspection every 2 years to identify minor leaks and corrosion before they become major emergencies.

What is the difference between PEX and copper pipes?

Copper is durable, rigid, and naturally antibacterial, but expensive. PEX is flexible, highly resistant to freezing damage, and faster to install, lowering total labor costs.

Manufacturer Warranty Note: Modern PEX piping brands (like Uponor) offer an impressive 25-year manufacturer warranty on their flexible tubing when installed exclusively with their approved matching expansion fittings by a certified technician.

Why is my toilet running constantly?

A running toilet is usually caused by a worn-out rubber flapper valve that no longer seals properly, or a misadjusted fill valve letting water overflow into the overflow tube.

Manufacturer Warranty Note: Universal toilet repair kits and fill valves bought at local hardware stores feature a 1-year to 5-year manufacturer warranty, depending on chemical resistance to harsh water treatments.

How do I shut off the main water supply to my house in an emergency?

Locate your main water shut-off valve, typically found in your basement, crawlspace, or near the street curb. Turn the wheel clockwise or pull the lever perpendicular to the pipe.

Manufacturer Warranty Note: Commercial-grade brass ball valves used for main water shut-offs carry a heavy-duty 2-year to 5-year manufacturer warranty against internal seal leaks or handle casting failure.

What items should I never flush down the toilet?

Only flush toilet paper and human waste. Never flush baby wipes (even those labeled "flushable"), paper towels, feminine products, or grease down your drains.

Manufacturer Warranty Note: Residential porcelain toilets carry a 1-year to lifetime manufacturer warranty on the ceramic chinaware itself, but this strictly excludes any labor costs or clogs resulting from flushing unapproved waste.

Why is my water pressure so low in the shower?

If it is isolated to one shower, the showerhead likely has mineral buildup we can clean with vinegar. If it affects your whole home, your water pressure regulator may be failing.

Manufacturer Warranty Note: High-quality showerheads are backed by a 1-year to lifetime limited manufacturer warranty on finishes and spray mechanisms against factory clogging or leaking.

What is causing my drains to gurgle?

Gurgling indicates a blockage in your plumbing's atmospheric vent pipes, forcing draining water to pull air through your fixtures' traps instead.

Why does my hot water run out so quickly?

This indicates your water heater has sediment built up at the bottom, taking up valuable water space, or one of the electric heating elements has burned out.

Manufacturer Warranty Note: Water heater electric immersion heating elements carry a 1-year to 5-year manufacturer warranty when purchased as factory replacements, though premature failure from hard water lime buildup is generally excluded.

How do I maintain a garbage disposal and what should go into it?

Run cold water while operating it to solidify oils. Avoid feeding it fibrous vegetables, coffee grounds, eggshells, or bones, which ruin the internal mechanisms.

Manufacturer Warranty Note: Food waste garbage disposals (like InSinkErator) carry a 1-year to 10-year limited manufacturer warranty depending on the motor tier. Premium models offer an "in-home" warranty where the manufacturer pays for authorized service technicians to come out and fix factory defects.

What does a water softener do and do I need one?

A water softener strips out harsh calcium and magnesium minerals. If you struggle with white scale buildup on fixtures or dry skin, our water test will tell you if you need one.

Manufacturer Warranty Note: Whole-home water softeners carry a 1-year to 5-year manufacturer warranty on the digital control valve, and a longer 10-year manufacturer warranty on the resin and brine tanks.

Why are my faucets dripping even when they are fully turned off?

Drips are caused by worn-down rubber washers, O-rings, or ceramic cartridges inside the faucet handle assembly that our team can quickly replace.

Manufacturer Warranty Note: Many premium faucet brands (like Moen, Delta, or Kohler) provide a limited lifetime manufacturer warranty to the original homeowner, providing replacement leak-free internal ceramic cartridges completely free of charge.

Can I adjust my water heater's temperature myself?

Yes, you can adjust the dial on the front of the tank. We strongly advise setting it to 120°F (49°C) to prevent accidental skin scalding while keeping energy usage low.

Disclaimer: For full details regarding appliance warranties and coverage standards, please consult the independent industry guidelines provided by Consumer Reports or contact our office directly to speak with an authorized service technician about your specific model.