Heatpunk alternatives for air-conditioning installers
Heatpunk is a heat pump design and quoting tool from Midsummer, with room-by-room heat loss and air-to-water design to MCS standards and a free tier. If your work is air conditioning or air-to-air heat pumps, you need split and multi-split design, refrigerant routing and F-Gas records rather than radiator sizing — and the job management after the sale. Here are the best alternatives — starting with the one built specifically for air conditioning.
1. Vento
Vento is built for air conditioning and air-to-air heat pumps. It runs a room-by-room heat load as you survey, matches units to each room, produces scaled split and multi-split drawings with the pipe runs, builds a proposal the customer e-signs with the deposit, and keeps the F-Gas register and job management on the same record — from £39 a month billed annually (£49 month to month), flat rather than per user. It also sizes air-to-water systems as a scoping estimate, but it isn't a full MCS heat loss tool.
- Room-by-room heat load built in
- Split & multi-split system design
- Branded proposals, e-sign & deposits
- F-Gas register & leak-check scheduling
- Flat pricing, not per user
- Full workflow on a phone, on site
Why installers look for a Heatpunk alternative
Heatpunk is a good tool for what it's built for — wet heat pump design, with a free tier that makes it easy to start. Installers usually look elsewhere for one of two reasons.
The first is air conditioning. If you fit splits, multi-splits or air-to-air heat pumps, the design is a refrigerant system: units matched to each room, a condenser that can serve them and pipe runs within the manufacturer's limits. That's what Vento's multi-split design does.
The second is everything after the design — scheduling the install, invoicing, service plans and F-Gas records. Job management isn't what Heatpunk advertises, so firms often add a separate system. Vento keeps it on the same record. See the full Vento vs Heatpunk comparison.
When to keep Heatpunk
If you design air-to-water heat pumps for the Boiler Upgrade Scheme and need a heat loss that stands up in an MCS design pack, a dedicated wet heat pump tool is the right choice — Vento's air-to-water sizing is a simplified estimate for scoping and quoting. Firms that do both often use one of each.
Vento and Heatpunk, feature by feature
"Not advertised" means we couldn't find it in what Heatpunk publishes — features change and vary by plan, so confirm anything that matters to you with them directly.
| Feature | Vento | Heatpunk |
|---|---|---|
| Air-conditioning design & engineering | ||
| Built specifically for air conditioning | The entire workflow | Not advertised |
| Room-by-room heat-load (Manual J) | Built in, instant | Yes |
| Split & multi-split system design | Scaled, construction-issue drawings | Not advertised |
| Unit capacity matching | From a SEER/SCOP catalogue | Not advertised |
| Condenser placement & pipe routing | On the drawing | Not advertised |
| F-Gas register, CO₂e & leak-check scheduling | Built in | Not advertised |
| Running-cost estimates on proposals (SEER/SCOP) | Automatic | Not advertised |
| Running your business | ||
| Jobs, scheduling & CRM | Yes | Varies by plan — confirm with them |
| Quotes & invoicing | Yes | Varies by plan — confirm with them |
| Branded proposals with e-signature | Good/Better/Best options | Varies by plan — confirm with them |
| Online payments & deposits | Card, Klarna, DD, transfer | Not advertised |
| Service & maintenance plans | Recurring, with certificates | Not advertised |
| Mobile app for on-site work | Full workflow on a phone | Not advertised |
| Running the operation | ||
| Dispatch board | Drag-and-drop, per engineer | Not advertised |
| Route planning | From Professional | Not advertised |
| Van & store stock | Ledger-backed levels | Not advertised |
| Purchase orders & invoice matching | Yes | Not advertised |
| Subcontractor job access | Per-job link, no account | Not advertised |
| Lone-worker check-ins | Office alerted if missed | Not advertised |
| Customer portal | Emailed link, no password | Not advertised |
| Schedule of Rates pricing | Import NHF, PSA or your own | Not advertised |
| Batch billing for maintenance contracts | Draft, review, commit | Not advertised |
| Specific to this comparison | ||
| Air-to-water heat loss, emitter & flow-temperature sizing | Yes — a simplified MCS-style estimate | Yes |
| Heat loss to MCS / BS EN 12831 for the design pack | No — Vento's is a scoping estimate | Yes |
| MCS documents & design reports | Readiness check only | Yes |
| Air-to-air & multi-split design | Yes — scaled drawings | Not advertised |
What to look for in a Heatpunk alternative
Sizing built in
Does it calculate each room's load, or do you size on a spreadsheet and type the result in?
Design to quote
Does the quote come out of the design, or is it re-keyed in a separate step?
F-Gas against the unit
Is the refrigerant record attached to each installed system, with leak checks scheduled from the charge?
Proposals customers sign
Can the customer sign and pay the deposit on their phone from the proposal?
Contract length
What is the minimum term, and what happens to your data if you leave? Get it in writing.
Published pricing
Is the price published, and is it per user or flat?
Other alternatives
2. Heat Engineer
Heating design platform with room-by-room heat loss, CAD drawings, emitter and pipe sizing and an MCS performance estimate.
3. Spruce
Heat pump design plus MCS paperwork: a quality management system, DNO applications and handover packs.
4. Payaca
Quoting, payments and workflow for renewables installers.
Heat pump design tools and air-conditioning software solve different problems — many firms that do both use one of each. Features change and vary by plan, so confirm current details on each provider's site.
Frequently asked questions
What is the best Heatpunk alternative for air conditioning installers?
Vento, because it's built for air conditioning and air-to-air heat pumps: room-by-room sizing, split and multi-split design with refrigerant pipe routing, e-signed proposals with deposits, F-Gas records and job management in one platform. Heatpunk is built for wet heat pump design.
Is there a Heatpunk alternative for air-to-water heat pump design?
Heat Engineer and Spruce are the main UK alternatives for wet heat pump design. Vento sizes air-to-water systems too, but as a simplified scoping estimate rather than a full MCS heat loss.
How much does Vento cost?
Vento's pricing is published and flat per tier rather than per user: from £39 a month billed annually (£49 month to month). Every plan has a 14-day free trial.
See also: all Vento comparisons, best air-con software 2026, and air conditioning software.
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A Heatpunk alternative built for air-con
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