"Alex was very prompt, friendly and very professional. He came on a Sunday to help with our plumbing issues."
DavidGoogle review
New HVAC system installation in Irvine & Orange County
Should you repair or replace your HVAC system? Get a straight answer from a local expert — available 24/7.
Free in-home estimate. No pressure. No "today only" gimmicks. If replacement makes sense, whole-home systems start at $99/month for qualified buyers.
24/7 Emergency Service
Licensed & Insured
Financing from $99/mo
CSLBLicense #979470
4.9★144 Google reviews
24/7Emergency service
100%Satisfaction guarantee
Repair or replace?
Signs it may be time to replace your HVAC system
If your comfort problem keeps returning, a properly sized new system may cost less in stress and repeat repairs.
System older than 10 years
Older systems can lose efficiency and become harder to justify repairing.
Frequent repairs
Repeated service calls can signal that the system is nearing the end of its practical life.
Uneven temperatures
Hot and cold rooms can point to sizing, airflow, or aging equipment issues.
Rising energy bills
A worn-out system can run longer, work harder, and still leave the house uncomfortable.
Weak airflow
Poor airflow may be tied to equipment, duct, filter, or installation issues.
Poor indoor air quality
Dust, stale air, and humidity issues can be signs your comfort system needs attention.
Installed for your home
Sized for your home, installed for long-term comfort.
A new HVAC system should not be a one-size-fits-all swap. Positive Plumbing looks at your current system, airflow, comfort needs, and installation requirements before recommending options that fit the home.
- ✓ Review comfort issues, airflow, and current equipment.
- ✓ Recommend right-sized replacement options.
- ✓ Install within manufacturer specifications.
- ✓ Test the new system and walk you through operation.
What happens next
A straightforward HVAC install process
Inspect the current system
We review your equipment, comfort needs, and the installation area.
Recommend sized options
You get replacement options that fit the home and the job requirements.
Remove and prep
The old equipment is removed and the area is prepared for the new installation.
Install, test, and explain
The system is installed, tested, and reviewed with you before the team leaves.
Reviews and trust
Homeowners mention fair pricing, responsiveness, and HVAC replacement help
★★★★★ Google reviews
Excellent Google reviews from local homeowners
4.9★ average across 144 Google reviews.
"Alex and his two workers did a wonderful job installing a new air conditioner and heater. His price was much lower than other vendors."
Faye Mayer
"Alex at Positive was fantastic and incredibly helpful in getting our 20 year old HVAC unit replaced in our condo."
Laura Oh
"Great quality, great reliability, great service, great and reasonable pricing. Perfect job for replacement of my coil."
Robert Xiong
Questions homeowners ask
HVAC install questions, answered before you book
How do I know what size system I need?
The right size depends on the home, airflow, existing equipment, and comfort needs. Positive Plumbing inspects before recommending replacement options.
Should I repair or replace?
If the system is older, needs frequent repairs, or no longer keeps the home comfortable, replacement may make more sense than another short-term repair.
Do you install heat pumps?
Yes. Positive Plumbing provides heat pump services along with AC replacement, heating installation, and full HVAC system options.
How long does AC replacement take?
The website notes the average AC replacement can take around 8 to 14 hours, depending on the job. The team will discuss timing before work begins.
Can I get an estimate before deciding?
Yes. Request an estimate or call 949-933-5036 to discuss your system and next steps.
IrvineOrange CountyTustinLake ForestMission ViejoNewport BeachAliso ViejoLaguna BeachLaguna NiguelHuntington BeachFountain ValleySanta AnaAnaheimFullertonBreaYorba Linda
Local contractor
Positive Plumbing, Heating & AC Repair
14271 Jeffrey Rd #206 Irvine, CA 92620
- ✓ Licensed California contractor: CSLB #979470
- ✓ Serving Irvine and nearby Orange County cities
- ✓ 24/7 emergency service available
Ready for a better comfort system?
Get a new comfort system installed the right way.
Get a clear HVAC installation estimate from a licensed local contractor before another repair turns into another hot week inside the house. New whole-home HVAC systems may be available as low as $99/month for qualified buyers.