Before you call an HVAC company

Know what's wrong, what it should really cost, and what to ask, before anyone's in your living room.

Calling about heating or cooling is stressful because you can't tell a fair recommendation from an upsell. This takes the surprise out of it, with real 2026 numbers, the surprise costs nobody mentions, and the questions that protect you.

Free. No phone number required to see your results. Built from how honest contractors actually diagnose a home, with every cost figure sourced. Educational, not a quote or a diagnosis.

✓ The likely cause
✓ A fair price range
✓ The exact questions to ask

Something just stopped working?

Run the 60-second self-check before you pay anyone.

Most "my AC died" calls turn out to be a dead thermostat battery, a tripped breaker, a choked filter, or a roughly $10 part. Rule those out first. It's free, it takes a minute, and it's the difference between a $250 fix and a $12,000 replacement pitch.

Before you call, rule out the free fixes and learn the fair price of the likely repair. A large share of "my system is dead" calls are a tripped breaker, a dead thermostat battery, a clogged filter, or a roughly $10 part, not a $12,000 replacement. A completely dead unit is usually a power or small-electrical fault (a repair in the low hundreds), so expect a diagnostic fee and a named part, and treat any "the whole system's shot" verdict on a unit nobody has metered yet as your cue to get a second opinion.

By the numbers · 2026

$150–$400: typical all-in cost of a capacitor repair (the part itself is only $10–$30). HomeAdvisor; This Old House
$300–$900: blower motor replacement; a refrigerant recharge runs $250–$700. Breaking AC; This Old House
Low hundreds (a breaker, float switch, contactor, transformer, or thermostat fault on a dead system) not a compressor. Validated 2026 repair knowledge base
20–30%: cooling energy that leaky ducts can waste, a common cause of hot/cold rooms. U.S. Dept. of Energy
The $5,000 rule: system age (years) × repair cost; over ~$5,000 leans toward replace (many now use $6,000–$7,000). Industry repair-vs-replace guideline

1. What's bothering you?

Tap everything you've noticed. Be honest. There are no wrong answers. This is the only step you need; everything after it is optional and just makes your report sharper.

2. About your system

Rough guesses are fine. The two answers below are all that's required.

How old is it?

What is it?

Add your region for real local pricing

Install prices swing 40–50% market-to-market. Pick your area and we'll adjust every range. Optional. Leave it and you'll get national ballparks.

Your region

Pick a quality tier to price

Most systems come in three tiers. This sets which price band a replacement is shown at. Optional.

If you replaced, what tier?

Type your model number to decode size & age

It's on the metal data plate on the outdoor unit (or furnace). We can read the tonnage reliably from the model number, and take a confidence-flagged guess at age. Optional.

Model number

Brand (helps date it)

Answer a ductwork question (for zoning feasibility)

Look at the ducts in your basement/attic. Optional. It sharpens the zoning advice.

What do your ducts look like?

Two questions about the house itself (the envelope)

Often the highest-value answer in the whole tool. Optional.

Insulation / age

Windows & drafts

Your home comfort report

What's likely going on

Your realistic options (and what they typically cost)

How these numbers were built (and why a "real" number needs a home visit)

These are installed ranges (equipment + labor) from 2026 industry pricing data (Trane's dealer pricing guide, HomeGuide, Angi, Carrier, Fixr and This Old House) then adjusted for your region if you entered one. They're an honest ballpark to set expectations, not a quote.

A real number depends on your home's actual heating/cooling load, your existing ductwork and electrical, access, and which surprise costs apply (see below). The only way to get it is an in-person measurement (a Manual J load calculation), never a price shouted over the phone.

Where a figure is reasoned rather than directly sourced, it's marked modeled.

Surprise costs that may not be in the first quote

These are real line items that commonly appear beyond the advertised equipment price. We're showing the ones most likely to apply to your situation, so you're never blindsided. Ask up front whether any apply to your home.

The honest truth about efficiency & your house

Rebates & tax credits: what's real in 2026

The federal 25C tax credit is gone for 2026. Congress (the One Big Beautiful Bill Act, signed July 2025) ended it. The IRS says the credit is not allowed for any system placed in service after December 31, 2025. If a contractor promises you a federal tax credit on a 2026 install, that's a red flag. (Only equipment installed and running on or before Dec 31, 2025 can be claimed, on your 2025 return.)

What money does still exist, and how to find yours

IRA Home Energy Rebates (HEAR & HOMES) survived. These are real, but income-gated and run state-by-state, rolling out unevenly. Some state pots are already waitlisted or closed even though the program legally runs through 2031.

HEAR can cover (if you qualify by income): a heat pump up to $8,000, electrical panel up to $4,000, wiring up to $2,500, insulation/air-sealing up to $1,600: household max around $14,000. Income tiers: at or below 80% of your area's median income, up to 100% of cost can be covered; 80–150%, up to 50%; above 150%, generally not eligible. (Source: Rewiring America; eligibility/availability vary by state. Verify live.)

How to find what you actually qualify for (do this before you buy):

1. DSIRE (dsireusa.org): search by ZIP; the best single database of federal/state/local/utility incentives.
2. Your state energy office: they administer HEAR/HOMES and confirm whether it's open and your income portal.
3. Your local utility, often the most immediately available money in 2026, and frequently stackable.

Bottom line: don't let anyone quote you assuming a federal tax credit. Real money in 2026 is utility + (if you qualify) state-run IRA rebates. Check your ZIP yourself.

Why getting the install right matters more than the brand

Not to scare you. To show you why asking good questions and picking the right contractor is the single biggest lever you have.

What to expect when you call

The questions that protect you

Red flags: slow down if you see these

Get your report + the printable "questions to ask" checklist

Email it to yourself so you've got it in hand when the contractor's standing in your kitchen. No spam.

Questions people ask us

What should I do before calling an HVAC company?

Rule out the free fixes first: set the thermostat to cool/heat with fresh batteries, check for a tripped breaker, and replace a clogged filter. A large share of "dead system" calls are one of those or a roughly $10 part. Then learn the fair price of the likely repair so you can tell a small fix from an upsell, and be ready to give the contractor your equipment's make and model. Expect to pay a diagnostic fee and get a named part, not a blanket "the whole system's shot."

How much does an HVAC service call or diagnostic cost?

Most companies charge a diagnostic or service-call fee, commonly around $75–$200, which is normal and often credited toward the repair. What protects you is what comes next: a named failed part and an itemized repair price. Common small repairs in 2026 run about $150–$400 for a capacitor, $300–$900 for a blower motor, and $250–$700 for a refrigerant recharge. All far below a replacement.

My AC or furnace won't turn on at all, and is it dead?

Usually not. A system that's completely dead is most often a power or small-electrical fault (a tripped breaker, a float switch, a contactor, a transformer, or a thermostat) which are repairs in the low hundreds, not a failed compressor. Don't accept "the whole system's shot" for a unit that won't power on until someone has actually metered it. Run the free 60-second self-check first.

When is it worth replacing instead of repairing HVAC?

A common guideline is the $5,000 rule: multiply the system's age in years by the repair cost, and if it's over about $5,000, lean toward replacing. A 12-year-old AC with a $500 repair hits $6,000, for example. Many people now use $6,000–$7,000 because equipment got pricier and R-410A is phasing out. Treat it as a trigger to investigate, not a hard line. A sound system may just need one repair.

What questions should I ask an HVAC contractor?

Ask them to show you the failed part and the reading, name the exact part and its cost, and itemize labor separately. For a replacement, ask for a load calculation (Manual J), a permit, and the make, model, and efficiency rating in writing. Confirm what's included (haul-away, permit, warranty) and get 2–3 quotes on the same scope. A good contractor welcomes these questions.

Educational only. This is a guide to help you ask good questions, not a diagnosis, not a quote, and not professional advice. Always get an in-person evaluation from a licensed contractor. Cost ranges are 2026 ballparks (installed = equipment + labor) drawn from public industry pricing data and adjusted by region; they vary widely by home, equipment, and local market. Figures marked modeled are reasoned estimates, not single-source quotes. Rebate and refrigerant rules change and vary by state. Verify locally (DSIRE + your state energy office + utility) before deciding. Nothing here is a hard price for your home.