Demo content — adapted to your business and location. Contacts, prices, reviews and claims are illustrative.
your city · North Town · East Town · Nearby TownMon–Fri, 8 am – 6 pmDemo phone

We sell the analysis. The equipment is optional.

Everwarm was founded to answer one question properly: what would a heat pump actually cost to run in this specific your city house?

Iris Kowalchuk spent six years in utility demand-side programs, reading contractor proposals for heat pump installations. Almost none of them contained a calculation. They contained a national efficiency figure, a price, and an implication.

Everwarm started in 2019 with the modelling as the product. Two hours in the house, twenty-four months of bills, a heat-loss model run against your city's own weather data, and an eight-page report with a month-by-month operating cost.

Thirty-eight percent of people who buy the modelling are told to wait or not to proceed. That number is on the front page for the same reason the year-one review exists: an analysis that always recommends buying is not an analysis.

How Everwarm started

  1. 2019

    Iris leaves utility program work and starts Everwarm as a modelling practice.

  2. 2021

    Installation added, after two years of referring the work out.

  3. 2023

    Year-one performance review becomes standard on every install.

  4. 2026

    310 homes modelled, 190 installed, 38% advised to wait.

310

Homes modelled

190

Systems installed

38%

Told to wait or not proceed

7 yrs

Doing only this

What we hold ourselves to

Charge for the thinking

Paid analysis can afford to say no. Free analysis cannot, and everyone knows it.

Check our own work

Year-one bills against the projection, on every install, with the variance explained.

Sequence it properly

Envelope before equipment. A heat pump in a leaky house is an expensive way to heat the outdoors.

The people who will model your house

A small practice: two modellers and an install crew. The person who models your house is the person who signs the recommendation.

I

Iris Kowalchuk

Founder & lead modeller

Six years in utility demand-side programs. Writes every report that goes out.

T

Theo Lamontagne

Modeller & building science

Runs blower door tests and thermal surveys. The one who says 'insulate first'.

S

Sasha Petrenko

Install lead

Cold-climate heat pump specialist. Commissions every system and sets the changeover.

Modelled within 10%, or the review is not the end of it

At the twelve-month review we compare your actual bills against our projection. If we were out by more than 10% and the cause is our model rather than your usage, we retune the system at no charge and refund the modelling fee. It has happened four times in 190 installs.

Get your house modelled

Reviews

Including the people we turned away

4.9 from 148 reviews · 310 homes modelled, 190 installed

“They told me not to buy anything. My furnace is five years old and the model said the payback was past its remaining life. Two hundred and forty-nine dollars to be talked out of a fifteen-thousand-dollar purchase.”
PPeter VandenbergWest Park
“The year-one review showed we were 8% off the projection and they explained exactly why — we had run the changeover two degrees lower than modelled. They retuned it at no charge.”
AAmrita BhallaGarden Park
“Every other quote was a brochure and a price. This was an eight-page report with a break-even month. My accountant read it and said it was better work than most business cases she sees.”
JJean-Luc FontaineOak Village

Find out what it would actually cost you to run

A modelling consultation is $249 and takes about two hours. You leave with an eight-page report, an operating-cost estimate by month, and no obligation whatsoever.