Find Top-Rated HVAC Companies by State

Browse our directory of award-winning HVAC contractors across all 50 states. Every listing is verified with real Google reviews and credential checks.

Alabama(AL)

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Northwind Heating & Air

Featured

"Energy-efficient AC and furnace installs with lifetime warranties."

1455 Larimer St, Denver, CO 80202

4.9(1,842 reviews)

northwindhvac.com

License CO-HVAC-88210

Services

AC Install Heat Pumps Furnace Repair Mini-Splits Tune-Ups

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Cost Guide

HVAC Cost Guide: 2026 Pricing

HVAC pricing took another step up this year. Refrigerant changes, higher SEER2 standards, and steady labor demand are all pushing numbers higher than they were even 18 months ago. Here's where most homeowners should land in 2026.

Service	2026 National Average
Service call / diagnostic	$95 to $200
AC tune-up (annual)	$95 to $200
Furnace tune-up (annual)	$120 to $250
Capacitor replacement	$200 to $475
Refrigerant recharge (per lb, R-410A)	$120 to $250
Blower motor replacement	$500 to $1,400
Evaporator coil replacement	$1,200 to $2,800
AC compressor replacement	$1,800 to $3,800
New furnace (80% AFUE, install)	$3,800 to $6,500
Full system replacement (3 ton)	$8,500 to $16,000
Heat pump (cold-climate, install)	$11,000 to $22,000

What moves the price

System size. Tonnage should match a real Manual J load calculation, not a rule of thumb. Oversizing wastes money for 15 years.
Efficiency rating. A 14.3 SEER2 base unit is far cheaper than a 20+ SEER2 variable-speed system, but the operating cost difference can be huge.
Refrigerant type. The R-410A phase-down is making older parts pricier. New systems on R-454B install fine but need trained techs.
Ductwork condition. Leaky ducts kill efficiency. A new system on bad ducts won't perform as promised.
Local rebates. Federal tax credits, utility rebates, and state programs can knock thousands off heat pump pricing.

Get at least three written estimates. The middle bid usually wins on value. Browse HVAC pros in your state above.

Seasonal Checklist

Spring HVAC Maintenance Checklist

Your AC has been sitting all winter, and the first 90-degree day is the worst time to find out something's wrong. A 30-minute spring routine plus one pro tune-up keeps most systems running through the season without surprises. Annual maintenance also keeps almost every manufacturer warranty intact, which matters more on $10,000+ systems.

Homeowner steps

Replace the furnace filter. Mark the date on the new one.
Clear leaves, mulch, and grass clippings from around the outdoor condenser unit. Leave at least 2 feet of clearance.
Gently rinse the condenser fins from the inside out with a garden hose, low pressure.
Check that the outdoor unit sits level. A tilted pad can stress refrigerant lines.
Test the thermostat by dropping the setpoint 5 degrees. Cool air should hit the vents within a few minutes.
Listen for grinding, screeching, or hard-start clicking. Any of those means call a pro.
Check the condensate drain line for clogs. A wet/dry vac on the outside end clears most.

What a pro should do

Verify refrigerant charge with gauges. Not "looks fine."
Test capacitor microfarads against spec.
Clean the evaporator coil if accessible.
Tighten electrical connections and check amp draws.
Inspect the heat exchanger on the furnace side.
Flush the condensate line and treat the pan.

Book your tune-up before May if you can. After Memorial Day, lead times stretch fast. Find an HVAC company in your state above.

Red Flags

HVAC Red Flags: When to Call a Pro Now

HVAC problems rarely fix themselves, and ignoring small symptoms almost always turns into a bigger repair bill. Here's what should send you to the phone instead of the toolbox.

Warm air from the AC vents. Could be low refrigerant, a failed capacitor, or a bad compressor. None are DIY.
Loud bang at startup. Often a hard-start cap or a failing compressor. Cheap fix early, expensive later.
Burning smell from the furnace. Dust on first use is normal. Anything that smells like hot plastic, shut it down.
Water pooling around the indoor unit. Clogged condensate line. Catches drywall and floors fast.
Short cycling. System turns on and off every few minutes. Usually a sizing, sensor, or refrigerant issue.
Ice on the refrigerant lines. Low charge or airflow problem. Running it like that damages the compressor.
Yellow or flickering pilot flame. Should be steady blue. Yellow can mean carbon monoxide risk.
Energy bill jumped without a weather change. Something is working harder than it should.

If any of these show up, especially on a system over 10 years old, get a tech out before the next heat wave or cold snap. Pick one from your state's list above.

Buyer's Guide

Finding a Trustworthy HVAC Company: What Homeowners Need to Know

Your furnace dies on the coldest night of the year. Or the AC quits in July when the kids are home. That's usually the moment people start searching for an HVAC company, and it's the worst possible time to make a careful decision. A little prep before things break can save you a lot of money and a lot of sweating. Equipment costs and refrigerant rules have both shifted in 2025, so what worked five years ago doesn't fully apply today.

Tips for picking the right HVAC pro

NATE-certified technicians. It's the industry's main skills test. Ask if the tech coming to your house holds it.
Manual J load calculation. Any company quoting a new system without measuring your home is guessing. Wrong size means wasted money for the next 15 years.
Multiple equipment brands. Shops tied to a single manufacturer tend to push that brand whether it fits or not.
Written maintenance plans. A good annual tune-up catches small issues. Just make sure it's a real visit, not a five-minute glance.
Up-front pricing for service calls. You should know the diagnostic fee before they arrive.
Refrigerant transparency. The R-410A phase-down is real. A solid company will explain what that means for your unit.
Local reviews from this season. HVAC work is seasonal, so recent feedback matters more than a five-star average from 2019.

Red flags

Free inspections that turn into a hard sell for full replacement. Quotes written on the back of a business card. Pushing the biggest unit you can afford. Any reluctance to put numbers in writing.

How this directory helps

Every HVAC company listed has been checked against public reviews, response data, and basic business verification. We don't take payment to bump anyone higher. The pros at the top earned their spot from real customers in your area.

Browse your state above and find a heating and cooling company you can call before something quits.