COMMERCIAL PROJECT PLANNER · USER-ENTERED QUOTES · TRANSPARENT ASSUMPTIONS
Ducted Heat Pump Installation Budget
Build a ducted heat-pump project budget from equipment, ductwork, electrical, controls, commissioning and contractor line items.
Build a quote-based project budget
Enter the actual line items from your contractor or supplier. Blank inputs are treated as zero.
WattCostLab does not supply a fabricated local contractor price on this page. Use actual quotes, published tariffs or the linked specialist calculators.
Why duct scope can dominate quote differences
Two quotes for the same nominal heat-pump capacity can differ because one assumes existing ducts are usable while another includes resizing, sealing, balancing or replacement.
Compare scope, assumptions and exclusions—not just the total price.
Use WattCostLab’s quote checklist before signing a contract. It helps you compare like-for-like project scope without claiming that a referral marketplace is active.
Frequently asked questions
Does WattCostLab supply a contractor price on this page?
No. Enter real quotes or local project estimates. The calculator is designed to make scope differences visible.
Should I size HVAC equipment from square footage alone?
No. Building load depends on climate, envelope, glazing, infiltration, internal gains and design conditions; use a proper load calculation for sizing.
Can Location change the energy tariff?
Where an official or configured country energy reference is available, the tool can load it as a starting point. You can overwrite it.