HVAC Replacement Cost Calculator: 2026 Installed Prices

2026 HVAC Replacement Costs at a Glance

All figures are installed prices - equipment, labor, permit, and disposal - for mid-tier brands at national-average labor. Every base price, multiplier, and add-on behind them is published in our cost model methodology. The two levers that move your number most: efficiency tier (variable-speed equipment costs ~45% more than single-stage) and region (the same job costs 35% more in Boston than in rural Tennessee). And before pricing anything, confirm the size: an oversized quote wastes thousands up front and every month after - check it with the free HVAC load calculator. For the two ductless rows specifically, the head count and capacity drive the price more than anything else, so work those out first with the mini split sizing calculator.

Pricing a single system rather than a whole setup? Use the dedicated furnace replacement cost calculator for heating-only jobs, or the central air installation cost calculator for AC-only replacements and first-time central air installs. For ductless work, the mini split installation cost calculator prices single-zone and multi-zone jobs with the line-set, electrical, and per-head detail that drives those quotes. All three share this page's pricing model with size, tier, and region tuned to that one system.

New HVAC System Cost by Size: 2 Ton to 5 Ton HVAC Unit Cost

New HVAC system cost follows tonnage more than anything else you get to choose, so this is the table to start from. Each figure is the typical installed price from the calculator above, at the standard efficiency tier in an average-cost region with the ducts reused.

So a new 3 ton HVAC system is about $9,600 as a furnace and AC, $8,400 as a ducted heat pump, and $6,000 if only the AC is being replaced. That $9,600 is the new furnace and AC cost most people are really asking about. Going up, the 4 ton HVAC unit cost is $11,300 for the full system and the 5 ton HVAC unit cost is $12,600. Going down, the 2 ton HVAC unit cost is $8,300.

Now look at what a size step actually costs. From 3 tons to 3.5 tons the full system goes up by $800, and from 3.5 to 4 by $900. That is small next to the whole bill, which is why the cost to replace a 5 ton HVAC system is only about 30% more than a 3 ton one, for two thirds more capacity.

Tip: never pick the size by price. A half ton either way moves the quote by under $1,000, and the wrong size costs you far more than that in comfort and running cost.

New HVAC System Cost for a 2000 Sq Ft House, and Other Sizes

If you know your floor area and not your tonnage, this is the same price list read the other way. The sizes come from the square footage helper inside the calculator, set to a mixed climate and average insulation.

So the new HVAC system cost for a 2000 sq ft house is about $10,400 for a furnace and AC, and the HVAC replacement cost for 1200 sq ft is about $8,300. Past roughly 2,700 square feet a single system runs out, because residential equipment stops at 5 tons, and the usual answer is two smaller systems rather than one bigger one.

Tip: use square footage for a first budget and tonnage for the real one. A hot climate, poor insulation or a lot of west-facing glass can move the same house a full size, so put your own details into the helper before you hold a quote against this table.

Furnace and AC Replacement Cost: Replacing Both Together

The most common whole-system job is swapping the gas furnace and central AC at the same time - and it's cheaper than doing them separately. A 3-ton furnace-and-AC combo runs $8,400-$10,700 installed at the standard tier ($7,000-$15,000 across sizes and tiers), versus roughly $9,400-$11,900 if you priced the AC-only and furnace-only jobs individually. The savings come from shared labor (one crew, one day or two), a single permit, and one refrigerant-line and plenum setup instead of two visits.

There's also a technical reason contractors push the combo: the indoor evaporator coil sits on top of the furnace, and a new high-SEER2 condenser requires a matched coil to hit its rated efficiency. If your furnace is within a few years of the AC's age - and they usually are - replacing both avoids paying labor twice within a short window. Use the calculator above with "Furnace + AC" selected for a line-item estimate sized to your home, and remember the same rule applies: confirm tonnage with a load calculation before accepting any combo quote. Not sure what size you have now? You can read your current tonnage off the model number before you shop. Curious what the new system will cost to run each month? The AC wattage calculator turns any SEER2 rating into watts, amps, and a monthly electricity bill.

Furnace and AC Replacement Cost by Size

Every figure below comes out of the furnace and AC replacement cost calculator at the top of this page, set to the standard efficiency tier in an average-cost region with your existing ducts left alone. The right-hand column is what the same two jobs come to if you book them a year or two apart instead.

The saving is real but it is smaller than most people expect, roughly $800 to $1,300, and it is worth being clear that it is never a reason on its own to replace equipment that is still working. A furnace with eight good years left does not become worth scrapping because bundling it saves a thousand dollars. The combo makes sense when both units are near the end anyway, or when the coil has to come off regardless.

Should You Replace the Furnace and AC at the Same Time?

The honest test is the age gap between the two. Within about five years of each other and both past ten, replace together and take the shared labor. More than eight years apart and you are usually better off replacing the failed one now, because scrapping a unit with real life left in it costs more than the bundle saves.

One thing that genuinely does force the decision: refrigerant matching. A new high-SEER2 condenser needs a matched indoor coil to reach its rated efficiency, and that coil sits on the furnace. If the coil has to be replaced and your furnace is old enough that its cabinet will not take the new coil cleanly, the furnace comes along whether you planned it or not. Ask any contractor quoting AC-only whether the existing coil and plenum are being reused, because that single answer decides which of these two columns you are actually in. Confirm the tonnage first with the AC tonnage per square foot calculator, which now sizes the furnace side of the same house too.

Heat Pump Installation Cost and Replacement Cost in 2026

A ducted heat pump is the one system here that heats and cools from a single outdoor unit, so its price is best read on its own. For a 3 ton home the heat pump installation cost is $7,400 to $9,400, with $8,400 as the typical figure, which is the average cost of heat pump installation at that size. That is the whole heat pump system cost, or heat pump system price if you prefer: outdoor unit, indoor air handler and its backup heat strips, refrigerant lines, thermostat and labor. The labor cost to install heat pump equipment is about $2,500 of it, and the heat pump cost per ton works out near $2,800.

Set the calculator at the top to Heat pump (ducted) and it works as a heat pump cost calculator for your own size, tier and region. It answers the new heat pump cost question for one ducted system serving the whole house. Home heat pump cost, whole house heat pump cost, ducted heat pump cost and new heat pump system cost on a quote all refer to that system. Use the result as your heat pump cost estimate before the first contractor visit. The table below gives the heat pump cost by size for standard efficiency and average local prices, with the ducts reused.

So the 3 ton heat pump cost is about $8,400 installed. Heat pump prices in this table are installed prices, so the cost of a 3 ton heat pump installed and the electric heat pump cost for that size are this one figure. The system priced here is a ducted air source heat pump, which is what most people mean by a central heat pump or a whole home heat pump. Air source heat pump cost and central heat pump cost read from this table as well. The 2 ton heat pump cost is about $7,000, the 2.5 ton heat pump cost about $7,700, the 3.5 ton heat pump cost about $9,400, the 4 ton heat pump cost about $10,400 and the 5 ton heat pump cost about $11,900. At every size the heat pump comes in below a gas furnace and AC, by $1,300 at 2 tons and $700 at 5 tons.

Tip: compare a heat pump quote with a furnace and AC quote, never with an AC quote alone. It replaces two machines, and judged against one it will always look expensive.

Heat Pump Replacement Cost: Outdoor Unit and Air Handler

Heat pump replacement cost is the same as the installation prices above when the ducts are sound, because a proper replacement swaps both halves. The cost to replace heat pump and air handler together at 3 tons is $7,400 to $9,400, so the 3 ton heat pump replacement cost most owners should plan for is about $8,400. That is also the average cost to replace heat pump systems of that size in an average market. The two are a matched set, and a new outdoor unit on an old air handler rarely reaches its rated efficiency.

Some quotes cover the outdoor unit only. They look cheaper, and they can be right when the air handler is only a few years old. We do not publish a price for that job because the calculator does not model it. Price the repair before you replace anything, too. A heat pump shares most of its repair parts with an air conditioner, and the AC repair cost calculator prices them one at a time. If the ducts need work as well, the same 3 ton replacement rises to about $10,400 with duct repairs and about $14,900 with new ductwork.

Cost of Heat Pump for 2000 Sq Ft House, 1200 Sq Ft and Other Sizes

The cost of heat pump for 1200 sq ft house, or for a 1500 or 2500 sq ft house, follows the sizes in the square footage table higher up. The figure at 1,200 sq ft is about $7,000, for a 1500 sq ft house about $8,400, and at 2,000 sq ft about $9,400. A 2,500 sq ft house lands between $10,400 and $11,900. Those assume a mixed climate. In a cold climate the heating load can push the size up, so check it with the heat pump size calculator before you hold a quote against these figures.

Cold Climate Heat Pump Cost and What the Tiers Add

The efficiency tier moves a heat pump price more than it moves an air conditioner price, because the top tier is where variable-speed and cold climate models sit. For the same 3 ton home the typical price is $8,400 at the standard tier, $10,100 at the mid tier and $12,200 at the high tier.

Region then stacks on top. A high tier 3 ton heat pump runs $9,100 to $11,600 in a low-cost region and $14,500 to $18,400 in a very high-cost one. So when a neighbor says their heat pump was twice the price of yours, tier and region usually explain all of it.

Cost to Replace an AC or Gas Furnace With a Heat Pump

There are two versions of this job. If the air conditioner has died and you want a heat pump in its place, the 3 ton price is about $8,400 against $6,000 for a like-for-like AC, so the cost to replace AC with heat pump equipment, or the cost to convert AC to heat pump as some put it, is about $2,400 more. For that you also get a second source of heat.

If you are replacing both the gas furnace and the AC, the heat pump is the cheaper install: about $8,400 against $9,600. The cost to replace gas furnace with heat pump equipment, which contractors may call the heat pump conversion cost or the cost to convert gas furnace to heat pump, can also include electrical work, because the backup heat strips need a large circuit. The calculator adds about $1,000 when you tick the electrical upgrade box.

Tip: converting to a heat pump saves money on the install when both old machines are due, and costs more when only the AC is. Whether it saves money to run is a climate question, and the heat pump size page covers the balance point that decides it.

Dual Fuel Heat Pump Cost: What We Can and Cannot Say

A dual fuel heat pump system, also sold as a hybrid heating system or a heat pump and furnace combo, pairs a heat pump outdoor unit with a gas furnace indoors. Furnace and heat pump cost together is the price of dual fuel. The heat pump heats the house in mild weather and the furnace takes over when it gets very cold. The calculator does not price dual fuel as its own system type, so we will not print a number for it. What the figures above do tell you is where it must sit: it has every part of a furnace and AC system, with a heat pump in place of the AC unit, so a dual fuel quote should come in at or above the furnace and AC price for your size. For 3 tons that floor is $8,400 to $10,700. If you want a dual fuel heating system, ask each contractor for it as its own base bid next to the heat pump only price, so you can see what the furnace half adds.

HVAC Replacement Cost Estimator: What to Do With the Number

An HVAC replacement cost estimator is most useful before you have spoken to anybody. Once you have three bids in hand you are comparing them against each other; the value of a number worked out beforehand is that it tells you whether all three are high together, which happens more often than people expect in a busy season or a market with few installers.

Treat the figure above as the equipment and standard labor for a straightforward swap. What it deliberately does not know about is your house: a furnace in a tight attic that two people have to carry up a pull-down ladder, a condenser that needs a new pad and a longer line set, an electrical panel with no space left for the circuit. Those are real costs and they are why a written estimate can sit above this range without anyone overcharging you.

So the number is a floor to reason from rather than a target to negotiate toward. If a bid lands well above it, the useful question is not “why are you expensive” but “which line is the difference”, and a contractor who wants the job will walk you through it.

Tip: get the estimate first, then the bids, and never in the other order. A number you worked out yourself is the only one in the process that nobody is selling you.

Is Your HVAC Replacement Quote Fair? The Honest Range for One Job

An HVAC replacement quote can look wrong and still be honest, and the spread is wider than most people expect. One homeowner collecting bids in 2026 was quoted $7,800 and $12,500 for the same 3 ton system. Another got four quotes for one house that ran from $11,000 to $20,000. Those are owner-reported figures, and neither owner was being cheated by every company at once. Whether a contractor calls it a quote or an HVAC replacement estimate, the check below is the same.

Our own model shows why. A 3 ton furnace and AC is $9,600 at the standard tier in an average market. Move only the region and it runs from $8,100 in a low-cost area to $12,900 in the most expensive cities. Move only the efficiency tier and it runs up to $13,900. Move both and the same house lands at $18,800. So one 3 ton job can honestly price anywhere from about $7,200 to $21,000 before any ductwork or electrical is added.

What the model cannot see is the company. Owners comparing notes keep finding the same pattern. A small local outfit comes in thousands below a large company with a showroom, a call center and round the clock service, for equipment from the same tier. You are paying for that overhead, and whether it is worth it depends on how much the after-sales support matters to you. In the very highest cost metros, quotes from the big companies often sit above our range altogether.

The test: set the calculator to your size, your tier and your region, and read the range. A quote inside it is fair. A quote above it is not automatically a rip-off, but it owes you an answer to one question: which line is the difference?

HVAC Replacement Cost by Region: One 3 Ton Job in Four Markets

HVAC replacement cost by region is the comparison people skip, and where you live moves the price more than most upgrades do. Here is one 3 ton job priced in each of the calculator's four markets, at the standard tier with the ducts reused.

The gap between the cheapest and the dearest market is 59%, and almost all of it is labor and overhead, because the equipment costs a dealer about the same everywhere. Tip: set Where You Live honestly before you judge a quote. A bid from Boston held against the Average US market figure will always look like a rip-off, and it is not one.

When Two Contractors Quote Different Sizes

This comes up constantly, and it is the most frustrating part of collecting bids. One owner put it plainly: one company says the house needs 4 tons and the next says no way. Both cannot be right. The price gap between them is not the problem, since a half ton is a small part of the bill. The problem is that one of them is guessing.

So ask each one for the load calculation behind the number, meaning the square footage, insulation, window and climate figures they used. A contractor who sized it properly can show you. One who read the size off the old unit's label cannot. You can run the same check yourself with our HVAC load calculator before the second visit. If nobody will show one, an independent report is not expensive, and Manual J calculation cost is set out in our guide. Tip: the right size is the one somebody can show their working for.

What Each Efficiency Tier Adds to an HVAC Quote

Most of the upsell on a quote is the Efficiency Tier, so it helps to know what the step is worth. On that same 3 ton system our model puts the Mid tier, two-stage equipment at 16 to 17 SEER2, about $1,900 above Standard. The High tier, variable-speed at 18 SEER2 and up, is about $4,300 above it.

One owner who ran the numbers on three real quotes found almost the same steps, $1,600 and $4,100, and worked out a payback of roughly 12 and 15 years on the electricity saved. That is an owner's own arithmetic, but it matches what the math usually shows. The higher tiers rarely pay for themselves on the power bill alone.

Tip: buy the higher tier for comfort, quieter running and humidity control, or because a rebate closes the gap. Do not buy it for the payback. To see the payback for your own climate and electricity rate, use the SEER savings calculator.

HVAC Installation Labor Cost: Why a $3,000 Unit Becomes a $10,000 Job

Almost every owner who looks the equipment up online asks the same thing. The unit is a few thousand dollars, so where does the rest go? It is a fair question, and the answer is not all labor. An installed price also carries:

• The matched indoor coil, line set, pad, drain, wiring and refrigerant, none of which come in the box
• Two installers for one to two days, plus an electrician if a new circuit is needed
• The permit and inspection, and the recovery and disposal of the old refrigerant and equipment
• The company's overhead: trucks, tools, insurance, licensing and training
• The labor warranty, which is the installer's promise to come back for free

Contractors who discuss this openly put the equipment at roughly half of a typical bill. One technician pointed out that an hourly rate which looks outrageous on a quote also pays for the truck, the tools and the insurance, and that the person doing the work sees a fraction of it. Those are trade comments rather than our figures, but they explain why an installed price runs well above what the same unit costs on a pallet. The calculator shows its own version of the split under every price: on a 3 ton furnace plus AC job it is about $6,600 of equipment and materials and $3,000 of installation labor, where labor means the installers' time on site.

Tip: compare a quote with another quote, never with an online equipment price. If a number still looks high, the fair thing to challenge is the scope, not the hourly rate.

The Paperwork to Get Before You Pay for a New HVAC System

The worst stories owners tell are not about price. They are about paying in full and then finding there was no permit, no contract and no way to claim a rebate. One owner discovered all three in the week after the install. Every item below is free to ask for beforehand and awkward to chase afterwards:

• A written proposal with the model number of every component: the outdoor unit, the indoor coil, and the furnace or air handler
• The AHRI certificate number for that exact combination. It proves the pieces are a rated match, and most utility and state rebates ask for it
• The permit number, or the date it will be pulled. Your city can confirm either
• Whether the ductwork and the line set are being reused or replaced
• The labor warranty in writing, with its length
• Who registers the manufacturer warranty. The longer parts coverage usually depends on registering within the first few months

Tip: hold the final payment until the system has passed inspection and you have the model numbers and the AHRI number in hand. A contractor who does this every week will not be surprised by the request.

How to Save on HVAC Replacement Without Cutting Corners

Most of what you can save on HVAC replacement is decided before the installer arrives. In rough order of size:

• Keep the ducts if they test tight. Full duct replacement is the largest single add-on in the calculator at $6,500, against $2,000 for sealing and minor changes. Ask for a duct leakage test before you agree to replace them.
• Do not finance for ten years if you can avoid it. A $9,600 system at 9.9% over ten years is $126 a month and about $5,500 in interest. A short zero-interest promotion that you can actually pay off is worth more than most discounts.
• Step down one tier. Going from High to Mid on a 3 ton full system saves $2,400, and you keep two-stage comfort.
• Get one quote from a small local company. Owners who do regularly report bids thousands below the large firms for the same tier of equipment.
• Check your utility rebate before you sign. Some programs need approval before the work starts, and a rebate you apply for afterwards can be refused.

Tip: cut the scope and the financing cost, never the installer's care. The cheapest bid that skips the permit or the load calculation is the one that costs the most later.

How Long Does an HVAC System Last? When to Start Budgeting

How long does an HVAC system last is the question underneath every repair or replace decision, so here are the working numbers. These are typical lifespans with ordinary maintenance, not guarantees.

Climate moves these more than the label on the unit does. An air conditioner that runs most of the year in a hot southern climate can be worn out at ten, and owners in mild climates regularly report furnaces still running past 25. A heat pump sits at the short end because it works in both seasons.

Age matters to the money because of the rule in the next section. At 12 years old, any repair over about $420 fails it. At 15, the line drops to about $330.

Tip: start collecting quotes when the system reaches its budgeting age, not when it fails. A planned replacement lets you compare three bids. A dead system in July lets you compare whoever can come this week.

Repair or Replace? The $5,000 Rule

Multiply the repair quote by your system's age in years. Over $5,000 → put the money toward replacement; under → repair. The price of each repair is in the AC repair cost calculator table, and a furnace part's price is on the furnace replacement cost calculator.

Small Repair or Big Repair: When the Repair Still Wins

The $5,000 rule treats a small repair and a big one very differently. A capacitor is one of the smallest repairs, so the rule says repair it at almost any age. So just fix it.

A compressor or an evaporator coil is where the answer changes. At $1,000 and up, the rule says replace on anything older than about 5 years, which sounds absurd until you remember the warranty. On a younger system it can take the part off the bill, and what it covers is explained under what the warranty changes on an AC repair bill, and the rule is applied to the price you would actually pay.

Tip: small repair, fix it. Big repair inside the warranty, fix it. Big repair out of warranty on an older system, put the money toward the replacement.

HVAC Rebates and Tax Credits in 2026: What Changed

Big change this year: the federal 25C tax credit is gone - Congress terminated it for equipment placed in service after December 31, 2025, so the $2,000 heat pump / $600 AC credits no longer apply to 2026 installs. Still on the table: state-administered IRA rebate programs (HEAR rebates up to $8,000 for heat pumps, income-qualified, live in a growing list of states), utility rebates ($200-$1,500 for high-efficiency equipment, very common), and manufacturer promotions in shoulder season. If you're choosing between an AC and a heat pump, run the numbers with the rebates included - and compare operating costs with the SEER savings calculator.