Terms of use of the calculators

1Purpose and acceptance

These terms apply to the savings calculator and the capacity calculator of Les Entreprises MPH (“MPH”), whether they are used by you, by an MPH representative with you, or viewed through a shared link or document. By using the calculators, you accept these terms.

2Residential dwellings only

The calculators are designed for residential dwellings: detached, semi-detached and row houses, housing units, lived-in cottages, and their garage or workshop, attached or detached. Their assumptions (occupants, appliances, ventilation, airtightness, schedules) are those of a home.

They do not apply to businesses, offices, restaurants, or institutional, agricultural or industrial buildings: the need of these buildings depends on their traffic, lighting, equipment and the fresh air the Code requires, which the calculators do not take into account. For these buildings, an MPH advisor does the calculation with you.

3Estimates, not a guarantee

The savings, required capacity, heat need, share of the year covered by the heat pump, backup hours, payback, subsidies and any other figure shown are estimates, calculated from simplified models and assumptions. They are provided for information, to help you compare options.

They are not a promise of results, an offer of sale, a quote, or professional engineering or energy-audit advice. Your actual results will differ, upward or downward.

4How the calculation is made

The heat need follows a simplified version of the CSA-F280 method. The home’s surfaces are derived from its floor area and ceiling height; its envelope (insulation, windows, airtightness) comes from typical values for its year of construction and the renovations entered. For a garage, the capacity calculation accounts for its slab, garage doors, air leakage and the heat that rises under a high ceiling.

The weather is the average of ten real winters (2016 to 2025), recorded hour by hour by Environment and Climate Change Canada at a station representative of the chosen region; for some regions, it is estimated from a nearby station. Heat pump performance comes from the data published by NEEP, ENERGY STAR and the manufacturers. Energy prices are the rates in effect on the update date, and their future increase is an assumption.

5What can make your results vary

Many factors the calculators cannot measure affect the actual results, including:

6The values entered

The results depend entirely on the values entered: floor area, floors, ceiling height, year of construction, renovations, region, temperatures, current heating and prices, chosen equipment. MPH does not verify these values and cannot know your home without seeing it.

Scenarios prepared with a representative during a meeting serve to illustrate and compare options: they do not replace the on-site assessment and are not part of the quote, unless they are written in it. Check the summary of your home before relying on a result.

7Capacity and equipment choice

The recommended capacity is a starting point, not an installation plan. The final choice of equipment, its capacity, and the number and location of indoor units is made after MPH assesses the home.

A wall-mounted heat pump first heats the room where it is installed and the open rooms connected to it; closed or distant rooms may need other heating. In extreme cold, backup heat may be needed. Perceived comfort, noise and room-by-room heat distribution are not calculated.

8Other brands

Data for brands MPH does not sell come from public sources (NEEP, ENERGY STAR, Hydro-Québec’s list of eligible equipment), reproduced as published on a given date. They may contain errors, change or no longer match the models offered. Their presence is neither an evaluation nor a recommendation of those products. Trademarks belong to their respective owners.

9The documents that bind MPH

Only the written quote, the signed contract and the written warranties of the manufacturer and of MPH determine the equipment, price, work and warranties. If a calculator result differs from these documents, these documents prevail. The calculators add no warranty.

10Accuracy, updates and availability

MPH updates the calculators, their data and their methods without notice; the same scenario can give a different result from one version to another. Despite the care taken, the calculators may contain errors or omissions. A result shared by link or kept in a document reflects the values and version of the time. MPH does not guarantee that the calculators will always be available or uninterrupted.

11Limitation of liability

To the fullest extent permitted by law, MPH is not liable for decisions made or losses suffered solely on the basis of the calculators’ results, including a difference between estimated and actual savings, an energy bill different from the estimate, a subsidy refused, reduced or changed, equipment chosen or installed without MPH’s assessment, or a capacity unsuited to a home whose actual characteristics differ from the values entered.

Nothing in these terms limits the rights granted to you by the Consumer Protection Act or the Civil Code of Québec.

12Personal information

The calculations are made in your browser; the values you enter are not kept by MPH, unless you choose to send them to us, for example to receive your results or request a quote. Our privacy policy then applies.

13Intellectual property

The calculators, their methods, texts, illustrations and presentation belong to MPH. Any reproduction or reuse, in whole or in part, without written permission, is prohibited.

14Changes and governing law

MPH may change these terms at any time; the version in effect is the one published on this page. These terms are governed by the laws of Québec. If the French and English versions differ, the French version prevails.