
Air conditioning & heating
Cool summers. Warm winters. Honest HVAC answers.
AC repair, furnaces, heat pumps and new systems, explained in plain English, with price ranges you can plan around and tools that show you where to start.
- Diagnosis before anyone sells you parts
- Repair-first advice when your system has life left
- Cost ranges with cited sources
Price a new system
Three questions. Opens the full calculator with your answers.
What we cover
Every part of your comfort system
From the outdoor condenser to the last register, here is how each service works and what it should cost.

AC repair
Warm air, weak airflow, ice or noise: what is usually wrong and what the fix costs.
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Furnace & heating repair
Ignitors, flame sensors, blowers and safety switches, explained.
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Heat pump repair & installs
Efficient heating and cooling in one system, including cold-climate models.
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New AC installation
Sizing, efficiency and what a proper install includes.
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Tune-ups & maintenance
What a real tune-up includes and how often you need one.
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Ducts & air quality
Filtration, humidity, duct sealing and fresher air.
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No heat or no cooling right now?
Five checks before you call
- Thermostat. Right mode (Cool/Heat), set a few degrees past room temperature, fresh batteries.
- Breakers and switches. Check the HVAC breakers and the service switch near the furnace or air handler.
- Filter. A clogged filter can freeze an AC coil or trip a furnace limit switch.
- Outdoor unit. Running? Fan spinning? Clear leaves and debris from around it.
- Drain line. Many systems shut off when the condensate pan is full.
Know the numbers
Typical US price ranges
National planning ranges. Your home, region, equipment and ductwork decide the real number.
How it works
From first symptom to a system you trust
The process the best HVAC companies follow, made simple.
- Tell us what is happeningSymptoms, system age and any error codes. Photos of the units help.
- DiagnosisElectrical, airflow, refrigerant and combustion checks before any parts are quoted.
- Written optionsRepair or replace, each itemized with price, warranty and expected life.
- Work & verifyDone to the manufacturer's specifications, then tested and explained.
Free tools
Answers in under a minute
New system cost calculator
Ballpark a central AC, AC plus furnace, heat pump or mini-split for your home size and climate.
Repair or replace?
The $5,000 rule plus refrigerant type, efficiency and repair history, weighed for you.
Troubleshooter
Pick your symptom to see likely causes, safe checks and when to call a pro.
Advice
Popular guides

Why is my AC freezing up?
Airflow, refrigerant and what to do right now.
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SEER2 and regional standards
What the ratings mean and the minimums where you live.
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Financing & rebates in 2026
What changed with the federal tax credit and where rebates remain.
Learn more →FAQ
Quick answers
How much does an AC repair cost?
Most common repairs (capacitor, contactor, drain line, fan motor) fall around $150–$650, plus a $75–$150 diagnostic visit. Compressor and coil replacements cost far more. See the AC repair cost guide.
Should I repair or replace my air conditioner?
A common rule of thumb multiplies the system's age by the repair cost; above about $5,000, replacement usually makes more sense. Try the repair-or-replace calculator.
Is the federal heat pump tax credit still available?
Not for new installs. Under the 2025 budget law, the Energy Efficient Home Improvement Credit (25C) is not available for property placed in service after December 31, 2025. Some state and utility rebates remain. See financing & rebates.
How often should my system be serviced?
Once a year for an AC or furnace, and twice a year for a heat pump that heats and cools. See the maintenance checklist.