Air Conditioning Repair
Third-Generation Family Service
When your air conditioner stops working during a heat wave, you need someone who will diagnose the problem accurately, explain it clearly, and fix it right the first time, without pressuring you into equipment you don’t need.
That’s exactly what Della-Mora Heating & Air Conditioning has delivered to San Diego County homeowners for over 30 years.
Why San Diego Homeowners Choose Della-Mora
Customers come to us for many reasons, but one pattern stands out: they find us after getting a quote that didn’t feel right. Maybe another contractor quoted $15,000 to replace a system that only needed a $400 repair. Maybe they received three different diagnoses from three different companies and didn’t know who to trust.
We’ve built our reputation on being the honest second opinion, the contractor who tells you what’s actually wrong and fixes only what needs fixing.
Here’s what you can expect when you call us:
Same-Day Response
AC problems don’t wait, and neither do we. When you call Della-Mora, you’ll hear back the same day.
Free Estimates
We evaluate your system thoroughly and provide clear, upfront pricing before any work begins.
No-Pressure Recommendations
If a repair will extend your system’s life by five more years, we’ll tell you. We only recommend replacement when it’s truly the best option for your situation.
Strong Warranties
Every installation includes a 2 to 5-year labor warranty. Repairs are backed by 90-day to 1-year warranties, plus full manufacturer coverage on all equipment.
Complete Heating, Cooling & Air Quality Services
Whether you need emergency repairs, a new system installation, or routine maintenance to keep everything running efficiently, our licensed technicians handle it all.
AC Installation & Replacement
When repair isn’t cost-effective or your system has reached the end of its life, our AC installation team helps you choose and install the right system for your home. We start with an accurate assessment of your needs and end with a system perfectly sized for your space, never oversized to pad the invoice.
HVAC Contractor Services
From complete HVAC system installations and replacements to maintenance plans and efficiency upgrades, we provide full-service heating and cooling solutions for your home. Our HVAC contractor services cover everything from heat pumps and zoned systems to commercial applications.
Furnace Repair
Gas furnace repair, emergency heating service, furnace installation, and seasonal maintenance. When your heater stops working, we diagnose the real problem and get your home warm again. Trust our furnace repair team to handle any heating challenge.
Air Duct Service
Ductwork repair, duct sealing, and indoor air quality solutions. Breathe easier knowing your system is circulating clean air throughout your home. Our air duct services improve both air quality and system efficiency.
Licensed, Certified & Veteran-Owned
California Contractor License #923196
Every technician on our team is fully licensed, insured, and ESCO EPA certified. We’re trained in proper diagnostics, safety protocols, and performance optimization for all major HVAC brands and system types.
As a service-disabled veteran-owned small business, we bring military discipline to residential comfort: show up on time, communicate clearly, do the job right, and never cut corners. Learn more about ENERGY STAR certified HVAC systems and how they can reduce your energy bills.
Serving Chula Vista and the Surrounding San Diego Communities
From Eastlake and Otay Ranch to Bonita, National City, and throughout the South Bay, Della-Mora Heating & Air Conditioning provides reliable HVAC service to homeowners across San Diego County.
We understand the unique challenges of HVAC systems in this region, from older homes in central Chula Vista with original ductwork to newer construction in master-planned communities. Our 30+ years of local experience means we’ve seen it all and know how to solve problems other contractors miss.
Financing That Makes Comfort Affordable
Major HVAC repairs and installations shouldn’t break your budget. We’ve partnered with Wisetack to offer flexible financing options:
Financing from $500 to $25,000.
Terms from 3 to 60 months
No hidden fees or compounding interest
Soft credit check that won’t impact your score
Ready for Honest HVAC Service?
Whether your AC is blowing warm air, your furnace won’t ignite, or you just want a professional opinion on that quote you received from another company, Della-Mora Heating & Air Conditioning is here to help.
Call us today or request your free estimate online. You’ll speak with real people who know your system, not a call center.