Why Is My Thermostat Screen Blank?
A blank thermostat screen usually means lost power: dead batteries, a breaker that is off, a blown board fuse or a condensate float. What to check first.
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Central Minnesota Heating and Cooling repairs and replaces furnaces, ACs, heat pumps and boilers in White Bear Lake (Ramsey County), about 15 miles from downtown Minneapolis.
White Bear Lake was a summer resort before it was a suburb, and Mark Twain retold its Native legend in Life on the Mississippi (1883). Some of the old lake cottages near the shore now serve as year-round homes.
Updated October 27, 2026 · By Eric Brown, owner, Central Minnesota Heating and Cooling

Around town: White Bear Lake · Downtown White Bear Lake · Ramsey County Beach · Goose Lake · U.S. Highway 61
Book in White Bear LakeThe railroad reached White Bear Lake in 1868, and for the next few decades the town was a summer resort, with hotels, pavilions and cottage colonies along the shore. Some of that era survives as winterized cottages and a few older summer homes near the water. The real housing boom came much later: about 2,900 people lived here in 1940 and more than 23,000 by 1970.
That 30-year jump built most of the city. Ramblers and split-levels from the 1950s and 60s fill the neighborhoods away from the lake, and most started with a basic furnace, a chimney and no air conditioning. The population has barely changed since 1970, so newer houses are mostly teardown rebuilds on the lakeshore and scattered infill, which put modern equipment on otherwise old blocks. A furnace swap in a 1958 rambler and one in a lakeshore rebuild have almost nothing in common.
Converted lake cottages are the hardest White Bear Lake houses to heat. Many sit over vented crawlspaces, and the ducts and water lines running through them are exposed to outdoor temperatures once winter sets in. Frozen pipes and floors cold enough to feel through socks are the usual results. Sealing and insulating the crawlspace walls, instead of the floor above, brings the ducts and pipes inside the warm part of the house. Leaving the heat very low while you're away invites the same problems.
The lake keeps White Bear Lake humid in July, and houses closest to the shore feel it most. In the 1950s and 60s ramblers, central air usually went in later on ducts sized for heat, so the coil gets marginal airflow, removes less moisture than it should, and can freeze on the most humid afternoons. Measuring static pressure tells us whether a larger return or a different blower setting is the fix. Near the shore, spring coil cleaning matters, since cottonwood fluff and lake debris collect fast.
White Bear Lake is Xcel Energy territory for both gas and electricity. For converted cottages and additions, the relevant Xcel rebates are the ones for mini-split and cold-climate mini-split heat pumps. For the 1950s and 60s homes it's more often a gas furnace or central AC installed to Xcel's quality-installation standard, and some of those rebates require an Xcel-registered contractor. Xcel also pays a bonus when insulation work comes before a heat pump, which suits a leaky cottage.
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, owned by Eric Brown and in business since 2009, serves White Bear Lake and nearby towns in Ramsey County, about 15 miles from downtown Minneapolis. We're open 7 days, 7am–9pm, and no-heat calls get priority. Call 612-429-3465.
An HVAC service call in White Bear Lake is a flat $79 trip charge, waived when you approve the repair. You get a written price before any work. Installed prices are on our pricing page.
Usually it's a humidity problem the AC can't solve alone. A walkout facing the lake sits partly below grade and stays cool, so the AC rarely runs long enough down there to pull moisture out of the air. A whole-house dehumidifier tied into the ductwork, or a dedicated unit for the lower level, dries it out without overcooling the upstairs.
Yes. Ductless mini-split heat pumps are the usual answer for cottages and add-on rooms, because the refrigerant lines need only a small hole through the wall. Cold-climate models keep heating well below zero, though output drops as it gets colder, so we size them with a Manual J and keep a backup heat source in place for the coldest nights.
Never off. Keep it warm enough that pipes on outside walls and in the crawlspace stay above freezing, open sink cabinet doors on exterior walls, and consider shutting the main water valve when you leave. A Wi-Fi thermostat that texts a low-temperature alert gives you time to act if the heat quits. Have the furnace or heat pump serviced in fall, and keep the CO alarms working even when nobody's there.
Moving a 1950s basement furnace can be done, but it's rarely cheap. The trunk ducts, gas line, venting and condensate drain all start at the furnace, so moving it means rerouting most of them. Many owners finish around it instead, with a mechanical room built to the manufacturer's clearances and, for a non-sealed furnace, enough combustion air. A 96% sealed-combustion furnace makes a smaller room workable, since it draws its air from outside.
A blank thermostat screen usually means lost power: dead batteries, a breaker that is off, a blown board fuse or a condensate float. What to check first.
Read the guideR-454B and R-32 are the lower-GWP refrigerants in new ACs and heat pumps. What EPA's rule says, how A2L ratings work, and the effect on your R-410A system.
Read the guideLennox PureAir pairs a MERV 16 filter with a UV-powered PCO stage for odors. Learn the yearly parts, who it fits, and how a $400–$800 media cabinet compares.
Read the guideBrands we service in White Bear Lake: Carrier · Trane · Lennox · Goodman · Rheem · Mitsubishi Electric · Daikin · American Standard · Navien · Weil-McLain · and every other major brand
Heat out in White Bear Lake? Call or send a request.