Heat loss, heating design& proposal systemLeave every property with the right numbers, a complete heating design and a professional report that gives customers a clear reason to choose you.
Every new account includes one Forge project, free — no card, no subscription. Instant heat loss, whole-house surveys and heat-source estimates stay free and unlimited.
The first time we used Heat Engineer Software I knew it was a winner in terms of how much time it was saving us. It freed up my time and gave me a couple of evenings back a week.
The client response is how professional it all looks, and they had a sense of trust in what we were telling them. It’s a game changer.
It probably takes me all of about 10 to 15 minutes to produce the whole house report. It’s much quicker now, we’re a lot more confident, and obviously what we’ve produced makes us feel a lot more professional.
I’ve been happy with Heat Engineer Software and will continue to stick with them. I would recommend them to others without a doubt.
I’ve done probably over 40 heat pumps with Heat Engineer Software, and every time the result has been perfect. I’ve never had any problems with room temperatures or heat pump sizes. I just know exactly what I’m going to get is going to be correct.
I don’t want callbacks from customers saying things are not right, and I’ve never had one back from using Heat Engineer Software.
Capture the property, calculate every room, design the system and produce a customer-ready report in one connected workflow.
Measured room by room. Aligned with CIBSE, MCS and BS EN 12831-1:2017. Sized around the temperature you set.
Measured dimensions create the foundation for the calculation — not a generic estimate based only on floor area.
Choose mobile, desktop, 3D LiDAR, CAD, MagicPlan, or Vieweet to capture each property with less measuring and manual entry.
Use AI-assisted sizing against the calculated heat loss and design conditions, cutting down manual selection and checking.
Size pipework and pumps, create the system layout and produce clear CAD drawings from the same project data.
Design heat pumps, boilers, biomass and bivalent systems without jumping between separate tools and calculations.
Survey properties and work on projects from your phone or tablet, with everything connected to The Forge.
Get the complete Forge without feature tiers or locked tools. Choose monthly, save with yearly billing, or purchase a Single Survey for one property.
For independent engineers running their own surveys and designs.
Unlimited room-by-room heat loss, system designs & proposalsChoose Single UserFor heating businesses with surveyors and designers working together in The Forge.
For teams of 6 or more users, we offer a bespoke package with tailored benefits and discounts. We’ll need a quick consultation to choose the right package for your business.
Survey, calculate, design and present with no limits.
Every new account starts with one Forge project included free. Instant heat loss, whole-house surveys and heat-source estimates are always free and unlimited — no project allowance or subscription needed.
Run your first survey and see exactly how fast an accurate heat loss calculation and system design can be.
From calculation standards and survey methods to pricing, training and the systems you can design.
Create your account and begin your first survey the same day, with no required onboarding call or setup process. Training and certification are included with subscriptions when you need them, but you do not have to complete training before getting started.
The Forge calculates heat loss room by room using measured geometry, building fabric, ventilation and design temperatures. Its calculation methodology follows recognised guidance including CIBSE Guide A and BS EN 12831-1, with outputs designed to support relevant MCS requirements.
This gives you a standards-based foundation for sizing the heat source, emitters and the wider system.
No. Monthly and yearly subscriptions include every current Forge feature, including the 3D LiDAR, with unlimited reports and unlimited CAD drawings.
Pricing changes according to how many people use The Forge — not which tools they need or how many projects they complete.
Single Survey is a separate one-property purchase with its own confirmed inclusions.
Yes. The Forge supports the design of heat-pump, boiler and biomass systems, so you are not forced to change software depending on the technology being installed.
The same room-by-room process helps you understand the property demand before selecting and sizing the heating system.
The room-by-room heat-loss results can be used to size the heat source, emitters, pipework and pumps around what the property actually needs.
The Forge also supports the technical drawings, system calculations and professional reports required to turn the survey into a complete heating design.
The Forge gives you several ways to capture a property, so you can choose the approach that best suits each job. These include 3D LiDAR for faster on-site surveys, existing property plans and manual measurement workflows.
Whichever method you use, the captured property continues through the same calculation, system-design and reporting process.
Choose Single Survey when you need The Forge for one property without starting an ongoing subscription.
Monthly and yearly subscriptions are designed for regular use and include unlimited reports and CAD drawings. You can move to a subscription later when you begin completing surveys more frequently.