Question 1

How long does furnace installation take?

Accepted Answer

Most furnace replacements are completed in four to six hours. If ductwork modifications or new gas line work is needed, it may take a full day.

Question 2

What's the best furnace efficiency rating?

Accepted Answer

For WNC's climate, a 96% AFUE or higher gas furnace is an excellent investment. The efficiency upgrade typically pays back within 5–7 years through fuel savings.

Question 3

Should I replace the AC at the same time as my furnace?

Accepted Answer

Often yes. If your AC is also aging, replacing both at the same time saves on labor, ensures equipment compatibility, and may qualify you for better bundle pricing and warranties.

Question 4

Can an oversized furnace cause short cycling?

Accepted Answer

Yes — an oversized furnace heats your home too quickly, satisfying the thermostat before completing a proper heating cycle, then shuts off and restarts repeatedly. This is a design problem from improper sizing at installation. The fix is either adjusting the blower speed and gas pressure to de-rate the unit, or in severe cases, replacing it with a properly sized furnace based on a Manual J load calculation.

Question 5

What is AFUE and why does it matter?

Accepted Answer

AFUE (Annual Fuel Utilization Efficiency) measures how efficiently a furnace converts fuel to heat. A 96% AFUE furnace turns 96 cents of every dollar of gas into heat, with only 4 cents lost up the flue. Older furnaces run at 78–82% AFUE, while modern high-efficiency units hit 95–98%. In Asheville's cold winters, upgrading from an 80% to a 96% AFUE furnace can save $300–$500 per year on gas bills.

Question 6

What is a high-efficiency furnace?

Accepted Answer

A high-efficiency furnace has an AFUE rating of 90% or above and uses a secondary heat exchanger to extract additional heat from combustion gases before they're vented. These units are identifiable by their PVC vent pipes (instead of metal flues) because the exhaust is cool enough for plastic. They cost more upfront but pay for the difference through lower gas bills within 5–7 years in our climate.

Question 7

Is a high-efficiency furnace worth the extra cost?

Accepted Answer

In Western North Carolina, absolutely. Our heating season runs roughly October through April, so you're running the furnace for 6+ months a year. The savings from a 96% AFUE unit over an 80% unit add up to $3,000–$5,000 over the furnace's lifetime. High-efficiency models also qualify for utility rebates and federal tax credits, which offset the higher upfront investment.

Question 8

What size furnace do I need for my home?

Accepted Answer

Furnace size depends on your home's square footage, insulation levels, window area, ceiling height, and local climate — not just square footage alone. In Asheville's climate zone 4A, most homes need 35–50 BTUs per square foot. A 2,000 sq ft home typically needs a 70,000–100,000 BTU furnace. We perform a Manual J load calculation for every installation to determine the exact right size — oversizing causes short cycling and comfort problems, undersizing means the house never gets warm enough.

Question 9

What happens if my furnace is too big for my house?

Accepted Answer

An oversized furnace heats the space too quickly, causing it to short-cycle — turning on and off frequently without completing full heating cycles. This creates uneven temperatures, excess humidity, higher energy bills, and accelerated wear on components. It's one of the most common installation mistakes in the industry, which is why we insist on a Manual J calculation before recommending any equipment.

Question 10

How much does a new furnace cost in Asheville?

Accepted Answer

A new gas furnace installed in Asheville typically costs $3,500–$7,500 depending on efficiency, capacity, and brand. A basic 80% AFUE unit starts around $3,500 installed, while a top-tier 96–98% AFUE variable-speed furnace with a premium brand runs $5,500–$7,500. These prices include the furnace, installation labor, thermostat, permits, and our workmanship warranty. Financing options are available.

Question 11

Does Quality Mechanical offer financing for furnace installation?

Accepted Answer

Yes, we offer flexible financing options for furnace installations and replacements so you don't have to go without heat or drain your savings. We work with lending partners to provide low monthly payments, and many of our plans offer promotional periods with reduced or deferred interest. Ask about current financing offers when you schedule your free installation estimate.

Question 12

What furnace brands does Quality Mechanical install?

Accepted Answer

We install and service all major furnace brands including Goodman, Trane, Carrier, Lennox, Rheem, American Standard, Amana, and York. We're particularly experienced with Goodman systems, which offer excellent reliability at a competitive price point. Regardless of brand, proper sizing and installation quality matter more than the name on the unit — a perfectly installed mid-range furnace outperforms a poorly installed premium one every time.

Question 13

Are Goodman furnaces any good?

Accepted Answer

Goodman furnaces are solid, dependable units that consistently rank well for value and reliability. They're manufactured by Daikin, the world's largest HVAC manufacturer, and come with strong warranties — including a lifetime heat exchanger warranty on many models. We've installed hundreds of Goodman furnaces in Asheville homes, and our callback rate on them is very low. For homeowners who want quality without paying premium-brand prices, Goodman is our top recommendation.

Question 14

What warranty comes with a new Goodman furnace?

Accepted Answer

Goodman offers one of the best warranties in the industry: a limited lifetime heat exchanger warranty and a 10-year parts warranty when registered within 60 days of installation. The parts warranty covers the gas valve, ignitor, control board, blower motor, and all other functional components. On top of that, we provide our own workmanship warranty covering the installation itself.

Question 15

What is the difference between a gas and electric furnace?

Accepted Answer

A gas furnace burns natural gas or propane through burners and a heat exchanger to warm air, while an electric furnace uses electric resistance heating elements — essentially large coils that heat up when electricity passes through them. Gas furnaces are significantly cheaper to operate in Asheville because natural gas costs roughly one-third what electricity does per BTU. Electric furnaces cost less to install but 2–3 times more to run monthly.

Question 16

Is a gas furnace or heat pump better for Asheville?

Accepted Answer

For most Asheville homes, a dual-fuel system — a heat pump with a gas furnace backup — is the ideal setup. The heat pump handles heating efficiently down to about 35–40 degrees, and the gas furnace takes over when temperatures drop below that. This gives you the efficiency of a heat pump for 70% of the winter and the reliable power of gas for the coldest nights. We can evaluate your home and recommend the best configuration.

Question 17

Should I switch from an electric furnace to a gas furnace?

Accepted Answer

If natural gas is available at your home, switching from electric resistance heating to a gas furnace can cut your winter heating bills by 50–60%. The installation involves running a gas line (if not already present), installing the furnace, and modifying the venting. The investment typically pays for itself within 3–5 years through energy savings. If gas isn't available, a heat pump is the most efficient electric alternative.

Question 18

Do I need new ductwork with a new furnace?

Accepted Answer

Not always, but it should be evaluated. If your existing ductwork is properly sized, sealed, and in good condition, it can be reused. However, if the ducts are undersized for the new furnace's airflow requirements, severely deteriorated, or full of leaks, installing a high-efficiency furnace on bad ductwork is like putting a sports car engine in a car with flat tires. We inspect ductwork during every installation estimate.

Question 19

Do new furnaces qualify for tax credits or rebates?

Accepted Answer

Yes — high-efficiency gas furnaces with AFUE ratings of 97% or higher may qualify for federal energy tax credits. Additionally, local utilities in Western NC occasionally offer rebates for high-efficiency equipment upgrades. We stay current on available incentives and help our customers take advantage of every rebate and credit they qualify for. Ask us about current offers when you get your installation estimate.

Question 20

What is two-stage or variable-speed heating?

Accepted Answer

A two-stage furnace has two heat output levels — a lower setting for mild days and full capacity for the coldest weather. A variable-speed furnace adjusts its blower speed continuously for precise temperature control. Both options run longer at lower outputs, which means more even temperatures, better humidity control, quieter operation, and lower energy bills compared to single-stage units that blast at full power every cycle.

Question 21

How long does it take to install a new furnace?

Accepted Answer

A standard furnace replacement — swapping the old unit for a new one using existing ductwork and gas lines — takes 4–8 hours and is completed in a single day. If we need to run new gas lines, modify ductwork, add a new flue, or convert from electric to gas, it may take a full day or extend into a second day. We'll give you a clear timeline before work begins.

Question 22

What areas does Quality Mechanical serve for furnace repair?

Accepted Answer

We serve Asheville and all of Western North Carolina including Hendersonville, Brevard, Waynesville, Black Mountain, Weaverville, Fletcher, Arden, Mills River, Swannanoa, and surrounding communities in Buncombe, Henderson, Haywood, and Transylvania counties. Our technicians are dispatched from Asheville and typically arrive within a few hours for standard service calls.

Question 23

How much does a new furnace cost installed?

Accepted Answer

A new gas furnace installation in the Asheville area typically costs $3,500–$7,500 for a standard-efficiency unit and $5,500–$10,000+ for a high-efficiency (96%+ AFUE) variable-speed furnace. If you're switching fuel types or need new gas lines, venting, or electrical work, costs will be on the higher end. We always include a load calculation to make sure the furnace is properly sized for your home.

Question 24

Do you offer financing for HVAC installations?

Accepted Answer

Yes — we offer flexible financing options through trusted lending partners, including 0% interest promotional periods and low monthly payment plans. Most homeowners qualify, and we can run a soft credit check that doesn't affect your score. A new high-efficiency system in the $8,000–$12,000 range often works out to $100–$175/month financed, and the energy savings can offset a good portion of that payment.

Question 25

Should I repair or replace my HVAC system?

Accepted Answer

Our general rule: if the repair costs more than 50% of a new system and the equipment is over 10 years old, replace it. Also consider the 'Rule of 5,000' — multiply the repair cost by the system's age, and if it exceeds $5,000, replacement is the better investment. Other replacement triggers include R-22 refrigerant, a cracked heat exchanger, a failed compressor out of warranty, and a system that's been repaired multiple times in the last two years.

Question 26

Why do HVAC installation prices vary so much between companies?

Accepted Answer

Price differences usually come down to equipment quality, installation quality, and what's included. The cheapest quote often uses builder-grade equipment, skips the load calculation, reuses old line sets and drain pans, and doesn't include permits or warranty registration. Our quotes include a Manual J load calculation, name-brand equipment, new line sets, proper permits, manufacturer warranty registration, and post-install testing to verify performance.

Question 27

What's included in a professional HVAC installation?

Accepted Answer

A proper installation includes a Manual J load calculation for correct sizing, removal and disposal of old equipment, new indoor and outdoor units, a new thermostat (if applicable), new refrigerant line set, condensate drain and safety switch, electrical connections, startup and performance testing, county permits and inspection, and manufacturer warranty registration. Cutting corners on any of these leads to comfort problems and premature failure.

Question 28

What HVAC warranty should I expect?

Accepted Answer

Most manufacturers offer 10-year parts warranties on compressors, heat exchangers, and major components when the system is properly registered (usually within 90 days of install). Some offer limited lifetime warranties on heat exchangers or compressors. Labor warranties vary by installer — we include a labor warranty beyond the manufacturer's parts coverage. Always ask about both parts and labor warranty, and make sure your installer registers the equipment.

Question 29

What size HVAC system do I need for my home?

Accepted Answer

The only correct way to size an HVAC system is with a Manual J load calculation, which accounts for your home's square footage, insulation levels, window types and orientation, air sealing, number of occupants, and local climate data. In WNC, altitude and mountain shading can significantly affect the calculation. A system that's too large will short cycle and dehumidify poorly; too small and it won't keep up on extreme days. We never guess — we calculate.

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