A full HVAC replacement usually runs between about $5,000 and $15,000 for a typical house. High efficiency or large homes can push the price higher. Exact numbers depend on system type, size and site work.
Lets discuss in detail how much does it cost to replace HVAC system? This guide will cover all aspects of cost of HVAC replacement.
Why numbers vary: what affects HVAC replacement cost
Size of home and system tonnage matter. Bigger homes need larger systems and higher cost. Efficiency choices like SEER or AFUE ratings add to equipment cost but save energy. Complex installations, ductwork fixes, and local labor rates change the price. Permit and disposal fees add small sums too.
Equipment vs labor: where the money goes
Around half goes to equipment and half to labor and materials. High end brands, two stage compressors, heat pumps, or variable speed blowers raise equipment cost. Duct replacement, new thermostats, or removing old units add labor and parts costs. Financing, warranties and rebates can change what you pay out of pocket. When budgeting, include the heating and cooling replacement cost together if you replace both furnace and AC.
Average cost of replacing HVAC system
Below is a simple average pricing table you can add to the article. These are typical U.S. ranges to help readers plan. Local prices in Murrieta and Temecula can be higher or lower, so advise getting on site quotes.
| Service | Typical cost range (USD) | What it usually includes | Notes |
|---|---|---|---|
| Central AC only (3 ton) | $3,500 – $8,000 | Condenser, evaporator coil, basic install | Higher for high SEER units or difficult installs |
| Furnace replacement (gas or electric) | $1,500 – $7,500 | Furnace unit, basic installation | High efficiency models cost more |
| Full system replacement (furnace + AC) | $5,000 – $15,000 | Both units, standard installation | Most common full replacement cost range |
| Heat pump split system | $6,000 – $18,000 | Outdoor heat pump, indoor air handler | Good for heating and cooling in one system |
| Mini split ductless (single zone) | $2,000 – $6,000 | Indoor head and outdoor unit, install | Multi zone systems cost more |
| Ductwork repair or sealing | $1,000 – $6,000 | Patching, sealing, minor fixes | Sealing can improve efficiency and reduce smells |
| Full duct replacement | $4,000 – $12,000 | New duct system | Varies with home size and access |
| Smart thermostat upgrade | $150 – $400 | Device and installation | Can save energy over time |
| Condensate drain or drain pan cleaning/repair | $150 – $600 | Cleaning or small repairs | Often fixes musty odor from standing water |
| Mold remediation in ducts | $500 – $4,000 | Cleaning, encapsulation or spot treatment | Cost depends on extent of contamination |
| System tune up / maintenance visit | $100 – $250 | Inspection, clean filters, basic checks | Recommended yearly to prevent problems |
| Permits and disposal fees | $150 – $800 | Local permit, old unit disposal | Local fees vary widely |
A short note for readers
If the home smells musty, the typical low cost fix is condensate drain or coil cleaning. If the smell comes from ducts or hidden mold the cost can rise because duct cleaning or remediation may be needed. For an accurate final price get a licensed local estimate that lists equipment, labor, and any duct or electrical work.
What local techs check first
Technicians check duct condition, electrical panel capacity, refrigerant type, condensate drainage, and the air filter condition. These items often change a simple replacement into a more complex job. Poor ductwork or blocked condensate drain can let water sit and cause mold. This leads back to common odor problems.
When replacement is smarter than repair
If repairs cost more than half the price of a new system, if the unit is older than 12 to 15 years, or if repairs keep repeating, replacement usually makes sense. New systems run cleaner, use modern refrigerants, and are more efficient. This lowers monthly bills and reduces emergency calls. Sometimes owners ask why my ac smell musty even after repairs. That can push the choice toward replacement if the smell comes from hidden duct mold.
Money saving ideas
Choose the right sized system not the biggest. Look for rebates and tax credits for high efficiency units. Ask about financing and seasonal discounts. If ducts are in good shape, a straight swap of equipment is the fastest and cheapest. If ducts need work, get that estimate up front.
How indoor smells tie to replacement choices
A musty smell can come from mold on coils, dirty drain pans, a clogged condensate drain, or damp ductwork. If your system smells, cleaning or replacing the affected parts and improving airflow often removes the odor. If the ductwork is old or full of mold, replacement or deep cleaning may be the practical choice. Address odor issues before or during replacement so the new system does not circulate old problems.
Final Note
If you are deciding whether to repair or replace your HVAC, get a estimate from a licensed local team. For honest HVAC installation and clear hvac replacement cost estimates in Murrieta and Temecula, contact Hutchinson Heating and Air to book an inspection or request a quote
FAQs
How much does it cost to replace an HVAC system?
A full replacement typically runs about $5,000 to $15,000. Exact price depends on home size, system efficiency, and any duct or electrical work.
What does the HVAC replacement cost usually include?
It covers the new equipment, basic installation, permit and disposal fees. Extra charges apply for ductwork, electrical upgrades, or difficult access.
How long does an HVAC installation take?
Most straightforward installs finish in 1 to 3 days. Bigger or complex jobs can take longer.
How long will a new HVAC system last?
Expect 12 to 20 years with regular maintenance. Proper care and seasonal tune ups extend life and save money.
Should I repair or replace my system?
Replace if the unit is older than 12 to 15 years or if repairs cost more than half a new system. Otherwise repair and keep maintaining it.
Can I finance a new HVAC system?
Yes many companies offer financing and monthly plans. Also ask about rebates or tax credits to lower upfront cost.
Do I need new ductwork when replacing the system?
Not always. A tech will inspect ducts and recommend sealing, repairs, or replacement based on condition.
What warranties come with a new system?
Most systems include a manufacturer warranty and some installers provide labor warranties. Get all warranty terms in writing before you buy.
