Heating & Cooling Cost Guides
What it costs to put in or replace the systems that heat and cool your home and heat your water.
11 guides. We check the prices against 2026 sources (see how we get our numbers). To compare every project, see the cost index.
How Much Does Radiant Floor Heating Cost?
Radiant floor heating costs $6 to $20 per square foot installed in 2026. Most people pay $10 to $13. Compare electric and hot-water systems and when to add one.
$6 – $20 / sq ftHow Much Does Air Conditioner Repair Cost?
AC repair costs $150 to $700 in 2026. Most repairs cost about $375. See what each common fix costs and when a new unit makes more sense.
$150 – $700How Much Does It Cost to Replace a Water Heater?
A new water heater costs $900 to $3,500 installed in 2026. Most people pay about $1,500. Compare tank, tankless and heat pump models before the old one leaks.
$900 – $3,500How Much Does It Cost to Replace Ductwork?
Replacing ductwork costs $1,400 to $12,000 in 2026, or $15 to $19 per linear foot. Most people pay about $5,000. Compare flexible and metal ducts.
$1,400 – $12,000How Much Does a Tankless Water Heater Cost?
A tankless water heater costs $1,500 to $4,500 installed in 2026. Most people pay about $3,000. Compare gas and electric and see if it pays off over time.
$1,500 – $4,500How Much Does It Cost to Install a Mini Split?
A ductless mini split costs $2,000 to $14,500 installed in 2026, or about $3,000 per zone (one room). See cost by number of zones and how it heats, too.
$2,000 – $14,500How Much Does It Cost to Replace a Furnace?
A new furnace costs $3,000 to $12,000 installed in 2026. Most people pay about $4,800. See what efficiency is worth and when to replace the air conditioner too.
$3,000 – $12,000How Much Does It Cost to Replace a Central AC Unit?
Replacing central air costs $4,000 to $12,000 in 2026. Most people pay about $6,500. See cost by home size and how to avoid paying too much.
$4,000 – $12,000How Much Does It Cost to Replace a Boiler?
Replacing a boiler costs $4,000 to $10,000 installed in 2026. Most people pay about $5,750. Compare gas, oil and propane, and see how much efficiency is worth.
$4,000 – $10,000How Much Does a Heat Pump Cost to Install?
A heat pump costs $6,000 to $20,000 installed in 2026. Most people pay about $14,500. Compare ductless and whole-home systems and see how they do in winter.
$6,000 – $20,000How Much Does It Cost to Replace an HVAC System?
A new HVAC system (heating and cooling) costs $7,000 to $20,000 in 2026. Most people pay about $13,000. See cost by system type and why quotes differ so much.
$7,000 – $20,000