Replacing the furnace or adding AC to your Mountlake Terrace home? We work on the city’s classic mid-century ramblers and newer builds near Town Center, and we size every system to the house it’s going in.








Most heating and cooling systems give plenty of warning before they quit for good. If two or more of these sound familiar, a replacement quote is worth a look.
Plenty of Mountlake Terrace homes still run equipment from the early 2000s. Past 15 years, efficiency drops and parts wear out faster.
Two or three repair calls in a year is a pattern, not bad luck. At some point, those bills are better spent on a new system.
A tired furnace or AC runs longer to do the same job, and your utility bill shows it. Newer equipment does more with less.
Cold bedrooms, a system that runs nonstop or one that can’t keep up can mean it’s worn out or was never sized right.
A cracked heat exchanger can leak carbon monoxide. It’s a safety issue, and replacing the furnace is usually the safe fix.
Summer heat waves are tough without AC. Central air or a heat pump keeps every room comfortable when it counts.
Repair is always our first move. If a fix will keep your system running safely for years, we’ll tell you that before we ever quote a replacement.
Gas furnace and central AC: the go-to setup for Mountlake Terrace homes with natural gas. You get strong, fast heat on cold mornings and central cooling for summer.
Heat pump: all-electric heating and cooling in one system. A Mitsubishi Hyper-Heat keeps full heating output down to 5°F, and it’s a simple way to add cooling to a home that never had it.
No ductwork? A ductless mini-split heats and cools room by room. It’s often the easiest way to cool a rambler whose ducts weren’t built for AC.
Curious what a new system costs before anyone visits? Answer a few quick questions and see installed prices for three levels of equipment.
We serve Mountlake Terrace from our Lake Stevens shop and give you a real arrival window on install day.
Our reviews add up to a perfect 5.0 across 200+ Google ratings. See for yourself before you call.
Clear, written options at three price points, so you pick what fits your home and budget.
“Mauro was incredible. Super personable, explained things in a clear way, and did great work on our old furnace. Would highly recommend!”
“Fantastic service. Service was quick and they kept me informed on what they were doing. Mauro was friendly and didn’t try to upsell any services that weren’t required”
“Exceptional work! The service was great and our fireplace is as good as new. Thank you Mauro!”
Free in-home quote and load calculation
Pick your system, with the price in writing
Installed, tested and cleaned up, usually in one day
Permits, haul-away and cleanup are part of every Mountlake Terrace install, and we walk you through your new thermostat before we go. It’s all backed by our 100% satisfaction guarantee.
A new system is a big purchase, and comfort shouldn’t have to wait. Mountlake Terrace homeowners can spread the cost of a new furnace, AC or heat pump into monthly payments through Wisetack, with 0% interest plans for qualifying customers.
Your new Mountlake Terrace system is backed by our 100% satisfaction guarantee. If anything about the installation isn’t right, we’ll come back and fix it at no extra cost.
Most furnace replacements we install run about $5,000 to $10,000. A furnace with central AC runs about $11,000 to $17,000, and a Mitsubishi Hyper-Heat heat pump system starts around $16,000. Prices are before sales tax. Use the calculator above for a price based on your home, and we’ll firm it up with a free in-home quote.
Usually not. Most furnace and AC swaps are done in a single day, so the heat is back on that evening. Bigger jobs like a new heat pump, ductwork or an electrical circuit can add a day, and we’ll tell you before we start.
Many Mountlake Terrace homes are mid-century ramblers, and older ductwork often needs a check before adding central AC. We do a load calculation at your home instead of matching the old unit, so the new system heats and cools evenly without short cycling.
If your system is over 15 years old, needs frequent repairs, has a cracked heat exchanger or can’t keep the house comfortable, replacing usually makes more sense. If a repair is the smarter move, we’ll tell you that too.
Yes. Permits through the City of Mountlake Terrace are included in every installation price, and we handle the paperwork so you don’t have to.
Every new system includes the manufacturer’s 10-year parts warranty (12 years on Mitsubishi) and our lifetime craftsmanship warranty. If you want labor covered too, we offer an optional 10-year labor warranty.
Yes. Wisetack offers monthly payment plans, with 0% interest for qualifying customers. Checking your options uses a soft credit check and only takes a few minutes.
Sometimes. Snohomish County PUD offers heating rebates for its customers, and Puget Sound Energy runs rebate programs too. Programs change often, so check the links below for what’s current.
Permits and energy rebates for Mountlake Terrace homeowners: