2025 refrigerant change
HVAC in Ann Arbor, MI
What a new heating and cooling system really costs, and how to size it right.
- Cost data tuned to your area
- See the numbers with no sales call
- Refreshed for 2026 rules & rebates
Typical system replacement in Ann Arbor
$9,400–$15,300
Most pay around $12,400 · AC + gas furnace · 2,100 sq ft
$220–$600/yrEnergy bill savings
≈ $7,400 over 18 yrs
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Cost per unit
$4.48–$7.28
per sq ft of home
Most popular here
AC + gas furnace
~48% of U.S. installs
Typical timeline
1–3 days
Start to finish
Typical lifespan
15–22 yrs
AC + gas furnace
Cost estimator
Estimate your system replacement
Adjust the inputs to match your home. Figures blend national pricing with Ann Arbor's local cost index. They're guidance ranges, not quotes.
Build your estimate
Tuned to Ann Arbor labor and material pricing. Adjust to match your project.
2,100 sq ft
1,000 sq ftMost homes: 1,500–2,8004,000 sq ft
Recommended size for this home: ≈ 3.5 tons
A common pairing: central air plus a high-efficiency gas furnace.
Estimated total
$9,400–$15,300
$4.48–$7.28 per sq ft of home
BudgetPremium
- Est. energy savings
- $220–$600/yr
- Midpoint estimate
- $12,400
Planning estimate, not a quote, your actual price varies by contractor, materials, and scope.
System type
What each option costs
Adjusted for Ann Arbor. Premium choices cost more up front but often last longer or perform better.
AC + gas furnace$9,400–$15,300
Heat pump (all-electric)$10,600–$17,600
Dual-fuel (hybrid)$12,900–$17,600
Ductless mini-split$11,800–$21,200
Most popular here
AC + gas furnace
~48% of U.S. installs
Typical timeline
1–3 days
start to finish
Energy bill savings
$220–$600/yr
≈ $7,400 over 18 yrs
The real payoff of a new system is years of lower bills. Moving from an aging, low-efficiency unit to a modern high-efficiency one can trim a few hundred dollars a year off heating and cooling across a long season.
Spot a fair quote in Ann Arbor
A typical system replacement here runs $9,400–$15,300. A fair quote starts with a Manual J load calculation. Be wary of anyone who sizes a system off square footage alone or pushes a same-day signature.
- Ask for the Manual J load calc, not a rule-of-thumb size.
- Confirm the SEER2/AFUE rating and that it's A2L-compliant.
- Get the labor warranty and rebate paperwork in writing.
What changes your price
- System type & efficiency. Heat pump vs dual-fuel and the SEER2/HSPF2 tier move the price the most.
- Ductwork condition. Leaky or undersized ducts may need sealing or replacement to hit rated performance.
- 2025 refrigerant change. New systems use A2L refrigerant (R-454B/R-32) and run 10–20% higher than pre-2025 equipment.
- Proper sizing (Manual J). A load calculation prevents the costly mistake of oversizing or undersizing the system.
Seasonal pricing
When system replacement costs the least in Ann Arbor
Demand and weather move installer pricing through the year. These are modeled trends for Ann Arbor; the actual timing and savings vary.
Price vs the yearly average
Cheaper Pricier
Best time to buy
May
About 6% below average · ≈ $750 less on a typical job
Peak demand
January
About 8% above average · ≈ $1,000 more on a typical job
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Why it matters
Why it pays to do it right
Comfort in the toughest weather
An undersized or failing system can't keep up when the weather turns extreme, in deep cold or relentless heat. Right-sized equipment holds temperature without short-cycling.
The repair-vs-replace tipping point
Once a system is 12+ years old and out of warranty, a major repair often costs more than it buys, especially with old-refrigerant prices climbing.
Lower, steadier energy bills
Jumping from an aging unit to a high-efficiency one can cut heating and cooling costs meaningfully over a long season.
Cleaner, healthier air
New systems filter and dehumidify better, which matters when homes are sealed up for months of winter.
Local conditions
HVAC in Ann Arbor
Heating dominates in Ann Arbor: long SE Michigan winters pile on nearly 6,500 heating degree-days, and the humid-continental cold means a right-sized, well-sealed system is the single biggest comfort upgrade a homeowner can make. Cold-climate heat pumps now handle most Ann Arbor heating days efficiently, and DTE Energy rebates help offset the upfront cost.
Heating degree days
~6,500
Long, cold SE Michigan winters make right-sized, high-efficiency heating the top home-comfort priority.
Design winter low
~0°F
A cold-climate heat pump handles most Ann Arbor days; gas or electric backup takes the rare deep-cold nights.
Cooling degree days
~700
Warm, humid summers call for a capable cooling stage and proper refrigerant charge.
Incentives in 2026
The federal 25C heat-pump credit expired December 31, 2025. For Ann Arbor homeowners in 2026 the savings stack comes from DTE Energy efficiency rebates, MI Saves low-rate financing, and careful system sizing, a Manual J load calculation prevents the over-sizing that wastes money on heating bills all winter.
Permits
Ann Arbor requires a mechanical permit for a full HVAC changeout; a licensed installer typically pulls it for you.
FAQ
HVAC questions, answered for Ann Arbor
Does a heat pump work in Ann Arbor's winters?
Yes, with planning. A cold-climate heat pump handles most Ann Arbor heating days efficiently; pair it with gas or electric backup for nights below about 5°F and you get the best of both.
Are there HVAC rebates available in Ann Arbor in 2026?
Yes. DTE Energy offers efficiency rebates on qualifying heat pumps and furnaces, and MI Saves provides low-rate financing. The federal 25C tax credit expired at the end of 2025, so utility programs are the main savings vehicle now.
Should I keep my gas furnace in Ann Arbor?
Many MI homeowners pair a heat pump with their existing gas furnace as backup, letting the heat pump carry mild days efficiently and the furnace handle the hardest cold snaps. It hedges fuel-price risk and extends furnace life.
How do I know what size system I need?
Ask your contractor for a Manual J load calculation, it accounts for Ann Arbor's climate, your home's insulation, and window area. Over-sized systems short-cycle and waste money; under-sized ones fall behind in the coldest weeks.
Guides
HVAC guides & buyer tips
Go deeper on costs, materials, and how to choose, then price it for your home above.
Cost guide
HVAC replacement cost and how to size a new system
What a new heating and cooling system costs in 2026, how the 2025 refrigerant change affects pricing, and how to size equipment right with a Manual J load calculation.
Read guideComparisonHeat pump vs. furnace and AC: how to choose
All-electric heat pump, gas furnace with AC, or a dual-fuel hybrid? How the three compare on cost, comfort, and operating expense, and which fits your climate.
Read guideComparisonAC repair vs. replace: when to stop fixing an old system
When an air conditioner is worth repairing and when to replace it, based on age, the cost of the fix, refrigerant type, and the 2025 refrigerant change that reset equipment prices.
Read guidePlanningSEER2, AFUE, and HSPF2 explained
What the efficiency ratings on an HVAC quote actually mean. SEER2 and EER2 for cooling, HSPF2 for heat pumps, AFUE for furnaces, plus the 2023 minimums and what's worth paying for.
Read guidePlanningWhat size AC or furnace do you need?
Why HVAC sizing is a load calculation, not a guess. How Manual J works, what tonnage and BTUs mean, and why an oversized system short-cycles and wears out early.
Read guidePlanningDo heat pumps work in cold climates?
Modern cold-climate heat pumps keep heating well below freezing. How they perform in deep cold, what backup heat and HSPF2 mean, and when dual-fuel makes sense.
Read guideHow we estimate: ranges combine national pricing with Ann Arbor's local cost index and the options you choose. They're modeled for planning and may differ from contractor quotes. Always get an on-site assessment before you commit.
Pricing modeled for 2026Sources & method