Warmth engineered for the coldest nights.
The North's premium HVAC company. Twenty-one years of installs, retrofits, and emergency saves.
Or call (844) 636-3726 — 24 / 7 · 365 days a yearYears serving the North
Certified technicians
Homes and buildings served
Urban emergency response
What we do
Every system in your building — one team.
Residential, commercial, air quality, and emergency response. Installed, serviced, and warrantied by the same crew from the first walkthrough onward.
Residential
Residential HVAC
Full-home comfort systems from install to lifetime support.
Residential
Heating & Furnaces
High-efficiency furnaces, heat pumps, and boiler service.
Residential
Cooling & AC
Central AC, ductless mini-splits, and precision tune-ups.
Air Quality
Indoor Air Quality
Whole-home filtration, humidity control, and UV purification.
Air Quality
Ductwork & Sealing
Design, install, seal, and clean high-performance duct systems.
Residential
Maintenance Plans
Priority service, discounts, and biannual precision tune-ups.
Commercial
Commercial HVAC
Rooftop units, VRF, chillers, and 24/7 facility contracts.
Commercial
24/7 Emergency
Live dispatch and 60-minute urban response, day or night.
Why Northern Ember
The bill matches the quote. The comfort matches the spec.
Three commitments we've held since 2004. They are the reason 63% of new customers came from a neighbor.
Upfront, flat-rate pricing.
Every diagnostic ends with a written quote before a wrench moves. No hourly meter, no surprise line items, guaranteed 30 days.
Same-day service, seven days.
Book by noon and we're there today. Book at midnight and a live dispatcher is answering by the second ring.
Lifetime workmanship warranty.
If our install ever fails because of how we installed it, we come back — no time limit, no fine print.
Head to head
Northern Ember vs. the big-box installer.
The differences that show up on install day — and every day after.
24/7 Emergency line
Furnace out at 2 AM? We answer.
How we work
Four steps. No unpleasant surprises.
This is the same process for a $200 tune-up and a $200,000 rooftop retrofit.
Book online or by phone
Two-minute booking. Choose a two-hour window; we confirm by text with your tech's photo and ETA.
Diagnose, then quote
A NATE-certified tech inspects the system, explains what they find, and gives a flat quote before touching a wrench.
Fix it right, once
Repairs use OEM parts. Installs are commissioned to spec and airflow-balanced before we call it done.
Follow-up you didn't ask for
Every job gets a 30-day check-in. Every install gets a free one-year tune-up. Every maintenance member gets us first.
Recent work
The jobs that don't fit in a brochure.
From a 1912 lakeside retrofit to a 24-floor VRF conversion. A few of the harder projects we've delivered.
A geothermal retrofit for a 1912 lakeside estate
Replaced two aging boilers with a closed-loop geothermal system, cutting heating cost by 63%.
Geothermal + high-efficiency air handler
North Loop tower: 24-floor VRF conversion
A phased conversion that kept 340 units occupied through six months of installation.
Variable refrigerant flow, 480 tons
Cedar Clinic surgical wing
HEPA and UV-C at every air handler; sub-40% RH under load for six operating suites.
Hospital-grade filtration + humidity control
Savings estimator
See what a new furnace and AC would save you.
Punch in rough numbers on your current heating and cooling setup. We'll show the combined annual savings, payback, and 10-year math in real time.
Free tools
The calculators our engineers use — yours to run.
Right-size a furnace, estimate payback on a modern system, or generate a calendar reminder for filter swaps. No signup, no email walls.
Open the tools hub1,240+ five-star reviews
The reason 63% of new work comes from a neighbor.
"They arrived at 11pm on the coldest night of the year. Furnace running again in ninety minutes. Charged me the quoted price, not an emergency premium."
"Third HVAC company I'd called for a diagnosis. First one to actually explain what was happening. New system runs 40% cheaper."
"Geothermal loop for a 1920s house. Complicated job, no shortcuts. Two years later it still runs exactly as promised."
"The maintenance plan is worth it. They caught a hairline crack in the heat exchanger months before it would have been a real problem."
"Commercial rooftop retrofit across four buildings. Zero downtime for our tenants. That's the whole story."
"Their techs wear covers on their boots and vacuum when they leave. Small thing. Says everything."
"Lake-effect winter dropped the furnace overnight. They were out in Ohio City by 7am with the right ignitor on the truck. Old-school service."
"Third-floor walk-up in Lincoln Park, tricky ductless install. Clean routing, no wall damage, and honest pricing. Rare combination."
Maintenance plans
Membership that pays for itself in one visit.
Members get priority scheduling, no overtime charges, and 15–25% off every repair — plus tune-ups scheduled around your calendar, not ours.
Ember
The essentials — done on schedule.
- One annual precision tune-up
- 15% off repairs
- Priority scheduling
- No overtime charges
- Filter reminders
Blaze
Our most popular plan.
- Two precision tune-ups (heating + cooling)
- 20% off repairs and parts
- Same-day priority
- Free diagnostic fees
- Transferable if you move
- 10-year lifetime workmanship
Inferno
Whole-home comfort concierge.
- Everything in Blaze
- IAQ and duct inspection annually
- Water heater + humidifier service
- 25% off repairs and parts
- Guaranteed 60-min response
- Dedicated account manager
Service areas
40+ cities across the North.
From the Twin Cities to the Iron Range, we run daily crews in every one of these markets.
Field notes
What our engineers write down.
The right-sized furnace: why bigger is almost always worse
Oversized furnaces short-cycle, waste fuel, and shorten every component's life. Here's how we size ours.
Elena Ostrowski, PE
Cold-climate heat pumps at -22°F: what actually works
We ran three inverter-driven heat pumps through a Duluth winter. Two exceeded rated capacity. One didn't.
Marcus Rehnquist
Why your winter air is 12% humidity — and what to do
Dry skin, static shocks, and wood floors that pop overnight are all a humidity problem.
Priya Anand
Common questions
Everything customers usually ask on the first call.
Ready when you are