A commercial building deserves better than an online estimator
Free calculators apply an efficiency ratio and an annual average. In commercial buildings, that is precisely what skews the result: a heat pump’s COP drops in the cold hours, defrost eats output, the backup takes over below the balance point, and commercial tariffs add demand charges on top of the energy price.
An approximate number presented to a client is credibility that does not come back. That is why Optima’s commercial calculator is not a simplified web form: it is the full software, simulating the building hour by hour, and you can try it in a demo on one of your own projects.
What the calculator produces
Gas RTU vs heat-pump RTU
The classic commercial replacement duel: full operating costs of both options over a real year.
Electricity vs natural gas
Electric, gas or dual-energy heating: which energy source costs less for this building, at these tariffs.
One existing unit vs several scenarios
Compare the equipment in place against one or several replacement candidates in the same analysis.
Investment, subsidies and savings
Installed cost or incremental cost, subsidies deducted, annual dollar savings at real tariffs.
Payback period
The number that makes a client decide: in how many years the replacement pays for itself.
CO₂ avoided
The emission reduction of the scenario, for ESG files and subsidy programs.
Why professionals rely on it
Built by engineers
M-itech was founded by building-mechanics engineers with 20+ years of field experience. Optima is the tool they wished they had.
Validated by hour-by-hour simulation
Every result rests on 8,760 hours of real weather, equipment performance curves and the tariffs from your bills, not averages or rules of thumb.
Used by professionals
Consulting engineering firms, contractors, distributors and building managers use it to justify replacements in front of their clients.
A defensible report
Professional PDF report, documented assumptions, consistent results from one rep to the next.