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CLUSTER HVAC-WEB-RECOMMENDS · 6 ENTRIES · EARLIEST ENTRY unknown

HVAC sizing and recommendation tools

This cluster comprises web apps and tools for HVAC system sizing, selection, cost comparison, and diagnostics, using inputs like home size, climate, and utility rates. The dated history is too thin to read a shape from—it predates the index or its members are undated. Traction leaders by activity signal are Frigo BEAIR, HVAC Sizing Calculator - Find Your Perfect System Size, and Heat Pump vs Gas Furnace Cost Calculator.

Entry timeline

ENTRY TIMELINE

AUG 2026: 6
AUG 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 5 ai-built · 1 unlabelled

Operator · 1 hobby · 2 commercial · 3 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 6 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01Frigo BEAIR0★unknownliveWeb tool that calculates the optimal air conditioning system for a home or office space.
  2. 02HVAC Sizing Calculator - Find Your Perfect System Size0★unknownliveai-builtWeb app that calculates ideal HVAC system size by square footage, climate zone, and insulation, returning BTU and tonnage recommendations.
  3. 03Heat Pump vs Gas Furnace Cost Calculator0★unknownliveai-builthobbyWeb app that compares heat pump and gas furnace costs and calculates annual heating expenses based on home size, climate zone, and utility rates.
  4. 04Paschal HVAC Advisor0★unknownliveai-builtWeb app that recommends air conditioning systems and highlights best-value HVAC deals based on a few household questions.
  5. 05HVAC Diagnostic Tool | Bay Area Climate Control0★unknownliveai-builtcommercialWeb app that diagnoses HVAC problems and gives step-by-step repair guidance for furnaces, air conditioners, heat pumps, and packaged units.
  6. 06HVAC System Finder | Bay Area Heating & Cooling Solutions0★unknownliveai-builtcommercialWeb app that recommends HVAC systems for Bay Area homes based on heating and cooling needs.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.