Contractor Budget Kit
Guides
Browse tools

RADIANT FLOOR

Radiant Floor Heating Cost Calculator

Estimate the cost of radiant floor heating by area, system type, zones and subfloor prep.

JOB INPUTS

Enter your numbers

Loading saved values

Heated area in sq ft

sq ft
Heated area in sq ft

Electric or hydronic

Electric or hydronic

Number of zones

Number of zones

Floor prep work

Floor prep work
Results update automatically
CALCULATED RESULTUSD
Estimated total cost$3,500.00
Radiant heating$3,200.00
Subfloor prep$0.00
Zones / thermostats$300.00
FORMULA USED400 sq ft × $8.00 + subfloor + 2 × $150.00 = $3,500.00

HOW TO USE IT

How to use the Radiant Floor Heating Cost Calculator

  1. 1

    Enter the heated area in sq ft.

  2. 2

    Choose the system type (electric or hydronic).

  3. 3

    Set the number of zones and subfloor prep.

  4. 4

    Review the total cost and line-item breakdown.

THE MATH

Radiant floor heating cost formula

Total = area × rate + subfloor + zones × rate

Electric radiant floor runs about $8/sq ft and hydronic about $15/sq ft. Subfloor prep adds ~$2/sq ft and each zone/thermostat ~$150.

PRACTICAL EXAMPLE

400 sq ft, electric, 2 zones, no subfloor prep

Heating = 400 × $8 = $3,200. Zones = 2 × $150 = $300. Total ≈ $3,500.

FAQ

Frequently asked questions

How much does radiant floor heating cost in 2026?

Nationally, $6-$20/sq ft depending on system type.

Electric or hydronic?

Hydronic is cheaper to run but pricier to install; electric is simpler.

Which code applies?

Installation must follow local electrical and building codes.