Construction software for HVAC contractors — estimate equipment, ductwork, refrigerant line sets, and labor across install, retrofit, and service work in one place. Built for HVAC contractors handling residential and commercial work, ducted and ductless systems, heat pumps, and maintenance contracts alongside new installs.
Picking the right unit, the right tonnage, the right SEER, the right indoor configuration — the price can swing thousands of dollars on a single line. A generic database can't keep up with current equipment pricing.
Returns, supplies, plenums, fittings, and dampers each have their own takeoff math. Doing it on paper means slow, inconsistent bids.
A change-out quote should take 10 minutes. A new commercial install should be priced in detail. One tool needs to handle both without forcing the same template on each.
A 3-ton ducted split system is priced one way. A multi-zone mini-split is a totally different bundle — head counts, line sets, condensers, controls. Without separate assemblies, the ductless jobs get under-bid.
Line set length, insulation thickness, and refrigerant charge are easy to forget in service quotes. Each one is a small line item — and across a year, the missed ones add up.
Proper Manual J load calculations are required for code in many jurisdictions, but they take hours per job. Field crews end up using rules of thumb to keep the bid moving — and the wrong-sized unit shows up on install day.
Mark up plans for condensers, air handlers, ductwork runs, refrigerant lines, and terminal devices. Equipment specs (tonnage, SEER, BTU) tie directly to the estimate so the bid matches the install.
Bundle equipment + ductwork + refrigerant + labor into one assembly per system type. Same library covers a new install, a retrofit changeout, and a maintenance contract — no rebuilding from scratch.
Reusable assemblies per system type — central air, ductless mini-split, multi-zone VRF, gas furnace, heat pump, dual-fuel. Each one bundles equipment, line sets, refrigerant, controls, and labor for that system. Pick the system, drop into the bid.
Build a maintenance contract assembly once with visit-level scope (filter, drain pan, refrigerant check, electrical inspection). Build IAQ add-ons (UV, HEPA, humidifier, fresh-air ventilator) the same way. Drop them into install bids so customers see the long-term option, not just the install number.
Generate clean proposals that include the equipment line, install scope, and optional maintenance contract — all from the same estimate. Customers see the long-term value alongside the install number.
Ducted + ductless + VRF
Separate system assemblies
Install + retrofit + service
One catalog
Maintenance + IAQ
Built into proposals
One plan. Everything included. Pay per seat.
$1,428/yr per seat
See how HVAC contractors estimate and quote with The Blocks.
The Blocks