Why Is My Thermostat Screen Blank, and Is the Furnace or AC Still Working?
A blank thermostat screen usually means lost power: dead batteries, a tripped furnace switch, a blown board fuse or a condensate switch. What to check first.
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Plymouth added most of its houses in the 1970s, 80s and 90s and kept building west into the 2000s, so its housing runs from split-levels near Medicine Lake to newer two-stories out past Vicksburg Lane.
We repair and replace furnaces, air conditioners, heat pumps, boilers and ductless mini-splits in Plymouth and across Hennepin County. Every visit starts with a $79 trip charge and a written price before any work, and the $79 is waived when you go ahead with the repair.
Xcel Energy serves much of Plymouth for electricity, but Wright-Hennepin Cooperative Electric serves part of the city, so AC and heat pump rebates depend on your address.
Updated September 23, 2026

Around town: Medicine Lake · French Regional Park · Parkers Lake · Hilde Performance Center · Highway 55
Book in PlymouthPlymouth added between 13,000 and 20,000 residents in each of three straight decades, the 1970s, 80s and 90s, and it built outward as it went. The east side, near Medicine Lake, where the area's first cabin went up in 1848, holds much of the older housing: ramblers and split-levels, many now on their third furnace. The middle of the city is thick with 1980s and 1990s two-stories. The western edge, out past Vicksburg Lane, filled in last, into the 2000s.
That spread means a replacement here can be very different jobs. On the east side it often involves rerouting venting and dealing with an old chimney. In the middle it means undoing builder shortcuts, such as a single small return serving the whole second floor. On the newest houses, the original furnace and AC are only now reaching their first replacement, and the ductwork is usually worth keeping.
If your Plymouth home has a dual-fuel heat pump, winter is when you learn how it behaves. On a damp 25-degree morning it runs defrost cycles that send up a cloud of steam, which is normal, and below its changeover temperature the gas furnace takes over. Snow is what causes trouble. An outdoor unit set too low, or under a roof edge that sheds snow, packs with ice and stops making heat. A stand that lifts it above the drift line prevents most of that.
A lot of Plymouth's 1980s and 90s houses got air conditioners sized by rule of thumb, often a size bigger than the house needs. An oversized unit cools the hallway thermostat fast and shuts off before it has pulled much water out of the air, so the house feels cool and clammy at once while the upstairs never catches up. A Manual J at replacement often points to the same size or smaller, paired with a variable-speed blower that runs longer, drier cycles.
CenterPoint Energy handles furnace and boiler rebates across Plymouth, and it doesn't restrict which dealer installs the equipment. Heat pump and AC rebates depend on whether your electric bill says Xcel Energy or Wright-Hennepin. Xcel's heat pump rebates may require a registered contractor. Wright-Hennepin pays its air-source and ground-source heat pump rebates as a credit on your bill and wants the paperwork within 90 days of purchase. The City of Plymouth's Home Energy Rebate pilot has its own income and location rules.
Rebate programs change every year; check the utility's current terms before you buy. Our guides: Xcel and CenterPoint rebates, heat pump rebates, what happened to the federal credits.
Central Minnesota Heating and Cooling serves Plymouth and the rest of Hennepin County, about 10 miles from downtown Minneapolis. We repair and replace furnaces, central air, heat pumps, boilers and ductless mini-splits, and we're open 7 days, 7am–9pm. Call 612-429-3465.
A flat $79 trip charge, waived when you approve the repair. Written price before any work; same prices in every town we serve. Installed prices are on our pricing page.
It sits on a floor exposed to an unheated garage, usually at the end of the longest duct run, often with supply ducts passing through cold spaces. Start with the basics: seal and insulate the ducts that serve it, check the damper, and make sure air has a path back to a return. If that is not enough, a single ductless heat pump can handle that room without changing the rest of the system.
The City of Plymouth set up a Home Energy Rebate pilot for 2025 and 2026 for residents making certain efficiency upgrades, with eligibility tied to income, location and which utilities serve the home. Pilots can change or end, so check the city's current rules before you start. Separately, Xcel Energy or Wright-Hennepin and CenterPoint Energy run their own equipment rebates, and we help with that paperwork.
It's in the window. A furnace installed between 2000 and 2005 is past 20 years old, and builder-grade models from that era commonly need an inducer, control board or ignitor around now. One repair on a sound furnace is usually worth doing. A cracked heat exchanger, repeated failures, or an R-22 air conditioner that needs refrigerant tips it toward replacement, ideally of both at once. You get a written quote either way.
It depends on the furnace maker's instructions, which set clearances from decks, windows, doors and air intakes, and many don't allow a termination under a deck at all. Even where it's permitted, the exhaust plume frosts the deck boards and can drift back to the intake pipe. When we replace the furnace, we move the pipes to an open wall or through the roof if the current spot doesn't meet the instructions.
A blank thermostat screen usually means lost power: dead batteries, a tripped furnace switch, a blown board fuse or a condensate switch. What to check first.
Read the guideReplacing the furnace and AC together in Minnesota costs $9,700–$19,300 installed with us. Matched coils, AHRI ratings, and when to split the job instead.
Read the guideMERV 8, 11, 13 or 16? What each rating catches, why filter depth matters as much as the number, and how to upgrade without choking your furnace or AC.
Read the guideBrands we service in Plymouth: AirEase · Amana · American Standard · Ameristar · Aprilaire · Arcoaire · Armstrong Air · Bosch · Broan-NuTone · Bryant · Buderus · Burnham · Carrier · Champion · Coleman · Comfortmaker · Concord · Daikin · Day & Night · Ducane · ecobee · Frigidaire · Fujitsu · Gibson · Goodman · Google Nest · Gree · Heil · Honeywell Home · Lennox · LG · Lifebreath · Lochinvar · Luxaire · Maytag · Midea · Mitsubishi Electric · MrCool · Navien · NTI · Payne · Peerless · Rheem · Rinnai · RunTru · Ruud · Samsung · Santa Fe · Tempstar · Trane · Triangle Tube · Utica Boilers · Viessmann · Weil-McLain · Westinghouse · York
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