HVAC replacement cost calculator
Service & CostsInstalled cost band by system type, tonnage and region, with the line items.
$ · installed
Service & Costs
6 tools, 6 guides, 3 comparisons
Replacement cost, maintenance, filters and the credits that move the price — what the job costs and what keeps it running.
This section is the business end of the trade: what a system costs to replace, what keeps it running, and the paperwork around both. Price a job with the replacement cost calculator, write it up with the invoice and estimate template, and keep it running with the maintenance checklist.
Filters and fresh air sit here too: the filter size chart and MERV chart for the return grille, the air changes per hour calculator for ventilation, and the ERV and HRV comparison for tight houses. The EPA 608 guide covers the certification every technician who opens a sealed system needs.
Tools
Air filter size chart
Service & CostsNominal against actual filter dimensions, searchable, with the common sizes.
in. nominal
HVAC maintenance checklist
Service & CostsA printable spring and fall checklist with the readings a tech should record.
spring · fall
MERV rating chart
Service & CostsMERV 1–16 against particle size, pressure drop and what each rating catches.
MERV 1–16
Air changes per hour calculator
Service & CostsCFM to ACH and back, blower-door ACH50 against the 2021 IECC, and the ventilation rate.
ACH · ACH50
HVAC invoice template
Service & CostsA fill-in service invoice or estimate with equipment, refrigerant pounds, labor and tax.
invoice · estimate
The maintenance year
Warm blocks are heating-side tasks, cool blocks cooling-side, grey ones apply all year. The outlined column is the month you are reading this in.
| Task | J | F | M | A | M | J | J | A | S | O | N | D |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Check the filter | ||||||||||||
| Cooling tune-up | not in January | not in February | not in June | not in July | not in August | not in September | not in October | not in November | not in December | |||
| Rinse the condenser coil | not in January | not in February | not in March | not in June | not in July | not in August | not in September | not in October | not in November | not in December | ||
| Flush the condensate line | not in January | not in February | not in March | not in July | not in August | not in September | not in October | not in November | not in December | |||
| Heating tune-up | not in January | not in February | not in March | not in April | not in May | not in June | not in July | not in August | not in November | not in December | ||
| Combustion and CO check | not in January | not in February | not in March | not in April | not in May | not in June | not in July | not in August | not in November | not in December | ||
| Test the CO alarms | not in January | not in February | not in April | not in May | not in June | not in July | not in August | not in October | not in November | not in December | ||
| Clear leaves from the outdoor unit | not in January | not in February | not in March | not in April | not in May | not in June | not in July | not in August | not in September | not in December | ||
| Read static pressure | not in January | not in February | not in March | not in May | not in June | not in July | not in August | not in October | not in November | not in December |
Guides
HVAC replacement cost
Service & CostsWhat a full system costs installed in 2026, and which line items move it.
11 min read
Furnace replacement cost
Service & CostsCost by AFUE, stage count and venting, plus the permit and liner line items.
10 min read
AC replacement cost
Service & CostsCondenser, coil and line-set costs, and when a coil-only swap is legal.
10 min read
HVAC maintenance guide
Service & CostsWhat a real tune-up includes, how often, and the readings worth keeping.
11 min read
HVAC tax credits in 2026
Service & Costs25C, the heat-pump caps, and what the 2025 law changed about the deadline.
9 min read
EPA 608 certification
Service & CostsThe four types, the 25-question sections, the 70% pass mark and the 2024 HFC rule.
11 min read
Comparisons
MERV 8 vs MERV 13
CompareCapture rate against pressure drop — what a MERV 13 costs your blower.
MERV · in. w.c.
ERV vs HRV
CompareHeat recovery with and without moisture transfer, by climate zone.
% recovery
Best HVAC brands and who makes them
CompareThe manufacturer families behind the badges, their refrigerant and warranty registration rules.
R-454B · R-32
Other sections
Sizing & Load
Manual J load, BTU/h, tonnage, duct sizing and static pressure — the numbers that decide what equipment goes in.
8 tools, 4 guides
Heating
Furnaces, heat pumps and the efficiency ratings that price them — AFUE, HSPF2 and the cold-climate question.
3 tools, 5 guides
Cooling
Air conditioners, mini splits, refrigerant and SEER2 — the cool side of the manifold.
6 tools, 5 guides