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Heat pumps · dual fuel · cold-climate
Ducted heat pumps and dual-fuel systems in Milwaukee
Keep your gas furnace and put a heat pump where the air conditioner sits: it cools all summer, heats on the mild and moderate days, and hands off to the furnace when it gets truly cold. We size it to your house and show you the operating-cost math before you buy.
★ 4.9 on Google · 440+ reviews | BBB A+ Accredited | Wisconsin-registered HVAC contractor | Veteran-owned | Since 2014
Flat-rate price first
You approve the number before work starts
24/7 emergency line
Rings Mike’s cell, nights and weekends
Free replacement estimates
Written proposal with options, same day
Lennox & Rheem dealer
Every brand serviced and repaired
How a dual-fuel system works
A dual-fuel system pairs an outdoor heat pump with a gas furnace. In summer the heat pump is your air conditioner. In spring, fall and much of the winter it heats the house by moving heat in from outdoors, which takes less energy than burning gas when the weather is mild. When it gets cold enough that the furnace is the cheaper or stronger choice, the controls switch over and the furnace carries the load.
- The heat pump takes the place of the outdoor AC unit, with an indoor coil on the furnace that is matched to it
- Your furnace stays as the second heat source, so you are never relying on one machine in January
- A dual-fuel thermostat or control decides which one runs, based on the outdoor temperature
- Same ductwork and registers, and no indoor units on the walls
Is a heat pump worth it in a Milwaukee winter?
It depends on the house and your utility rates, and we will tell you honestly. Cold-climate heat pumps are built to keep heating efficiently at 5°F, and many still produce useful heat well below zero, but every heat pump loses capacity as it gets colder. That is why the dual-fuel setup suits so many Milwaukee homes: the heat pump works the mild and moderate days, and the furnace takes the deep cold.
Before you decide, we work out the switchover point for your house, the outdoor temperature where the furnace becomes the cheaper heat, using your actual electric and gas rates and the heat pump’s rated performance. Then we put a yearly operating-cost comparison on paper next to the price.
When it makes sense, and when it doesn’t
- A good fit: your air conditioner is due for replacement anyway, the furnace has years left, and the ductwork moves enough air
- A good fit: you want to burn less gas without giving up gas heat on the coldest nights
- Think twice: undersized ductwork or a full electrical panel may need work first; we check static pressure and the panel before we quote
- Think twice: if the furnace is near the end too, we price a full replacement next to the dual-fuel option so you can compare
How we install it
- A load calculation for your house, not a guess from the old label
- Static pressure and airflow measured on your existing ductwork
- Heat pump, matched indoor coil and dual-fuel controls installed and started up to the manufacturer’s procedure
- The switchover point set for your rates and explained, so you know what the system is doing and why
- Permit pulled whenever the work requires one, and the inspection scheduled
Recent furnace and outdoor-unit installs
Photos from our own jobs, not stock images.
Emergency right now? Call or text 414-595-5175, any hour.
Request service or a free replacement estimate
We call you back during business hours. You get a flat-rate price before any work begins, and repairs are guaranteed for one year, parts and labor.
Rather pick a time yourself? Book a tune-up, free estimate or repair visit online, any time of day.
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What it costs
- Estimate: free, in writing, with the operating-cost comparison
- Milwaukee-area average for a cold-climate heat pump, full system: $7,500 to $14,500 installed; a dual-fuel setup keeps your furnace (price guide)
- Discounts: Focus on Energy instant discounts on qualifying heat pumps; we check your exact model before you buy
- 0% APR for 18 months through Marine Credit Union on qualifying installs, on approved credit, no down payment, 18 equal monthly payments
How it works
What happens when you call A-1
1
You call or text, any hour
A person answers 414-595-5175, not a call center. We ask a few quick questions and give you a real arrival window, not a guess.
2
We find the actual problem
We test before we replace anything and show you the readings, so you can see what failed and why.
3
You approve a flat-rate price
You get the price before any work starts, with repair and replacement options in writing when both make sense. No hourly surprises.
4
We fix it, test it and clean up
Most repairs are finished on the first visit. We test the system, clean up after ourselves and explain what we did.
Specials, financing and rebates
Comfort you can afford, all year.
Everyday offers with no expiration date. Mention the one you want when you book; details are on the Specials page.
$89
Precision Tune-Up
Furnace or AC. A full safety and efficiency check before the season hits, with a written report of what we found. Book it online.
$500 off
A new furnace or AC install
Lennox and Rheem high-efficiency systems, installed to code and permitted when required, with our 10-year parts and labor warranty on installs registered with the manufacturer.
$1,000 off
Furnace + AC bundle
Replace both at once and save $1,000 instantly on a qualifying high-efficiency furnace and air conditioner package.
0% APR for 18 months
Through Marine Credit Union on qualifying installs, on approved credit; no down payment, 18 equal monthly payments. Wells Fargo and our in-house plan are also available.
Already have a replacement quote? Get a free second opinion.
We will give you our own written replacement estimate, free. If we think a repair makes more sense than a new system, we will tell you.
Never think about a tune-up again: join the A-1 Comfort Club.
A yearly maintenance visit for each system and priority on no-heat and no-cool days, plus 15% to 20% off repairs on the higher plans. From $150 a year for one system.
Why Milwaukee calls A-1
Big-company standards. Local-shop accountability.
Flat-rate pricing, quoted first
You approve the number before a tool comes off the truck. No hourly surprises, no upselling.
24/7, and no call center
After-hours calls ring Mike’s cell, not a call center. If he is on another call, text or leave a message and you hear back quickly.
Authorized Lennox and Rheem dealer
Factory-backed equipment and warranties, and we service every brand you already own: Carrier, Trane, Goodman, York, Bosch, Mitsubishi and more.
Repairs guaranteed 1 year, installs 10
Every repair is guaranteed for one year, parts and labor. New Lennox and Rheem installs registered with the manufacturer carry a 10-year parts and labor warranty, with limited lifetime heat exchanger coverage on select models.
State-registered, veteran-owned
Wisconsin Registered HVAC Contractor #1304500, BBB A+ accredited, NATE-certified technicians, and a crew of eight with 115+ years in the trade. One shop in South Milwaukee since 2014.
4.9 stars from 440+ neighbors
Every review is public, including the critical ones, and we reply to them. Judge us by the whole record.
Good to know
Frequently asked questions
Can I add a heat pump to my existing furnace?
Usually, yes. Most gas furnaces can be paired with a heat pump in place of the air conditioner, with a matched indoor coil and a dual-fuel thermostat or control. We check the furnace, its blower and the ductwork first and tell you if anything needs to change.
At what temperature does it switch to the furnace?
It depends on your house and your rates. We calculate the switchover point from your electric and gas prices and the heat pump’s rated performance, set it, and show you how to adjust it.
Will a heat pump keep my house warm below zero?
A cold-climate heat pump keeps producing heat below zero, just less of it. In a dual-fuel system you don’t have to find out where its limit is: the furnace takes over in the deep cold.
Does a heat pump make noise in winter?
Outdoors it sounds about like a modern air conditioner. On cold, damp days it also runs short defrost cycles, which can make a whooshing sound and a little steam by the outdoor unit. That is normal.
Do I need new ductwork?
Not usually. Heat pumps need good airflow, so we measure static pressure on your existing ducts. If a return is undersized we tell you, and fixing it improves comfort with any system.
Are there rebates or discounts for a heat pump?
Focus on Energy offers instant discounts on heat pumps that meet its efficiency tiers: participating distributors pay them and the contractor passes them through, so the discount comes off the invoice. Income-qualified households may also qualify for the state’s IRA Home Energy Rebates, which mostly require an IRA Registered Contractor. The federal 25C tax credit ended for equipment placed in service after December 31, 2025.
How much does a heat pump cost in Milwaukee?
A whole-house cold-climate heat pump system runs $7,500 to $14,500 installed in the Milwaukee area, according to 2026 Milwaukee figures from HVAC Project Cost, a cost-estimate website. A dual-fuel setup keeps your furnace, so there is less equipment to buy. Those are area averages, not our quotes; you get a written price after a free estimate. Sources are in our Milwaukee HVAC price guide.
Are your repairs guaranteed?
Yes. Every repair is guaranteed for one year, parts and labor. If something we fixed fails within that year, call us and we make it right at no charge.
Reviews
4.9 stars from 440+ Milwaukee neighbors.
5 out of 5 stars
“They were able to come out within 2 hours of calling them. Mike walked me through the entire repair and made sure I understood what he was doing. Price was fair and communication was excellent.”
Chris D. · Repair · Google review
5 out of 5 stars
“Called on a Saturday and they gave me a time. We were able to get our furnace going ourselves. We called and canceled and he said that is fine and asked what we did. He told us he would have done the same.”
A. C. · Weekend furnace call · Google review
5 out of 5 stars
“Had the new furnace completely installed in less than 24 hours. Polite installers, left zero mess. Price was fair.”
Deb V. · Furnace replacement · Google review
Read them all on Google
These are a few highlights. Google shows every review, including the critical ones, and we reply to them. Judge us by the whole record.
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