Recent Blog Posts

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3 Signs You May Need To Repair Your Air Conditioning System

August 18, 2025
In this blog, we discuss three signs that indicate your AC unit might need some professional air conditioning services. Read more now.

Residential HVAC Solutions

Chula Vista, CA

24/7 Emergency Services

Free Estimates For Installation And Repair

Same-Day Response To Calls And Emails

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Your Home's Comfort Headquarters

Della-Mora Heating and Air Conditioning is dedicated to maintaining optimal comfort in San Diego County homes throughout the year. Our 30-year history and fourth-generation legacy have equipped us with the knowledge and skills to deliver exceptional heating and air conditioning services. We're dedicated professionals who focus on your comfort and satisfaction. Our method is straightforward: we listen attentively, diagnose accurately, and repair efficiently—without pushing unnecessary services or replacements.

As a service-disabled veteran-owned small business, we value hard work and quality service. We provide complimentary estimates for installations and repairs, collaborate with insurance providers, and respond to your calls and emails on the same day. Our team holds all necessary licenses, insurance, and ESCO EPA certifications, guaranteeing you receive top-notch service. We back our work with manufacturer warranties on products and generous labor warranties for both installations and repairs. Choosing Della-Mora HVAC means selecting integrity, skill, and a partner in home comfort. Ready to feel the difference? Contact us today to transform your home into the comfortable haven you deserve.

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Why Choose Della-Mora Heating and Air Conditioning

Free Estimates For Installation And Repair

Will Work With Insurance Companies

Same-Day Response To Calls And Emails

Manufacturer Warranties On Products

Two To Five Year Labor Warranty On Installs

Labor Warranties On Repairs From 90 Days To One Year

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AC Services

Stay cool during San Diego's warm seasons with our full range of AC services. We handle installation, upkeep, and repair for all AC brands, with a focus on the reliable AC Pro line. Our team ensures your cooling system operates efficiently, keeping you comfortable without inflating your energy bills.

Air Quality Services

Improve your home's air with our quality enhancement services. We provide solutions from advanced filtration to humidity management. Our specialists can help you create a healthier living space by reducing allergens and pollutants.

Emergency Heating and Air Repair

For urgent comfort needs, rely on our emergency repair team. We're available 24/7 to address unexpected issues and quickly restore your heating or cooling system. Our swift response ensures minimal disruption to your home comfort.

Furnace Services

Stay warm during San Diego's cooler nights with our complete furnace services. We cover installation, maintenance, and repairs to keep your heating system safe and efficient. Our team is skilled in all furnace types, providing reliable warmth when you need it.

Heating & Cooling Services

Enjoy year-round comfort with our comprehensive HVAC services. We handle all your heating and cooling needs, from expert installation to regular maintenance and timely repairs. Our aim is to keep your system running smoothly, reducing energy costs and preventing unexpected breakdowns.

HVAC Testing

Optimize your HVAC system's performance with our thorough testing services. We use advanced tools to check efficiency, spot potential issues, and improve overall function. Regular testing helps avoid major problems and extends your system's lifespan.

Mini-Split Services

Enhance comfort in specific areas with our mini-split services. These systems offer targeted heating and cooling, ideal for additions or rooms without ductwork. We provide expert installation, maintenance, and repair to keep your mini-split system operating effectively.

Thermostat & Control Services

Manage your home's climate with our thermostat and control services. We install smart thermostats that adapt to your preferences and save on energy costs. Our team helps you select and set up the ideal control system for your needs and budget.

Ventilation Services

Boost your home's air flow with our ventilation services. Good ventilation is key for air quality and energy efficiency. We evaluate your current setup and suggest improvements for fresher, cleaner air throughout your home.

Water Heating Services

Ensure a steady hot water supply with our water heating services. We handle all types of water heaters, from standard tanks to efficient tankless models. Our team assists in choosing the best option for your home, ensuring you always have hot water when needed.
Save $1000 on Installation
Get $1000 off any new HVAC system installation. Present this offer during your in-person estimate to claim your savings.

Call Della-Mora HVAC today to schedule your free estimate!

Not valid with any other offers or promotions. Restrictions apply. Must mention this coupon at the time of scheduling.
(619) 739-6161
Save $1000 on Installation
Get $1000 off any new HVAC system installation. Present this offer during your in-person estimate to claim your savings.

Call Della-Mora HVAC today to schedule your free estimate!

Not valid with any other offers or promotions. Restrictions apply. Must mention this coupon at the time of scheduling.
(619) 739-6161
10% Off for Heroes
Military, law enforcement, and educators receive a 10% discount on HVAC services. Thank you for your service to our community.
Contact us now to book your discounted service!
Not valid with any other offers or promotions. Restrictions apply. Must mention this coupon at the time of scheduling.
(619) 739-6161

Our Recent Projects

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Here's what our satisfied customers are saying...

At Della-Mora Heating and Air Conditioning, we take pride in providing exceptional heating and air services to our customers. We would be grateful if you could share your thoughts about our HVAC shop with others. Your feedback helps us improve and helps others make informed decisions. Please take a moment to leave a review  of Della-Mora Heating and Air Conditioning and let others know what you think.

  • What makes Della-Mora Heating and Air Conditioning different from other companies?

    Della-Mora stands out because of its 30-year history, fourth-generation expertise, and commitment to honest, efficient service. As trusted HVAC contractors in Chula Vista, CA, we emphasize quality craftsmanship, integrity, and long-lasting results. Our service-disabled veteran ownership also reflects our dedication to discipline, professionalism, and reliability, ensuring every client receives dependable comfort solutions backed by solid warranties and personalized attention.

  • Do you offer both residential and light commercial HVAC services?

    Yes, we specialize in both. Our HVAC contractors in Chula Vista, CA handle everything from residential heating and cooling systems to light commercial installations and maintenance. Whether you manage an office building, rental property, or single-family home, our team ensures your system runs efficiently and reliably all year long, delivering consistent comfort and energy savings.

  • What types of heating and cooling systems do you service?

    We service all major brands and system types, including furnaces, central air systems, heat pumps, and mini-split units. Our technicians have the training, experience, and certifications to work on any system, providing accurate diagnostics and effective repairs that restore performance quickly and safely. We also stay updated with the latest equipment innovations for better results.

  • How quickly can you respond to emergency heating or cooling issues?

    Our team is available 24/7 for emergencies. When your system breaks down unexpectedly, our HVAC contractors in Chula Vista, CA respond promptly to minimize downtime and restore comfort fast. We understand that heating and cooling problems can’t wait, so you can count on immediate, reliable assistance when it matters most.

  • Are your technicians licensed and certified?

    Absolutely. Each technician holds full licensing, insurance, and ESCO EPA certification. Della-Mora’s HVAC contractors in Chula Vista, CA stay current with industry standards and safety practices to ensure every installation and repair is completed correctly the first time. This professionalism provides peace of mind and consistent quality for every homeowner we serve.

  • What steps do you take to ensure indoor air quality?

    We offer comprehensive indoor air quality solutions that include advanced filtration, humidity control, and ventilation upgrades. Our specialists assess your home to find and fix air circulation issues, helping reduce allergens, dust, and pollutants for a healthier environment. Improved air quality can also enhance energy efficiency and overall comfort year-round.

  • Do you provide maintenance plans for ongoing system care?

    Yes, we offer maintenance programs designed to extend the life of your system and prevent costly breakdowns. Our HVAC contractors in Chula Vista, CA recommend regular inspections and tune-ups to keep your system efficient, reliable, and compliant with manufacturer warranties. These plans also help identify minor issues early, preventing more serious problems down the road.

  • Can you help me choose the right heating or cooling system for my home?

    Definitely. We guide homeowners through every step—from load calculations to equipment selection—so you get the right system for your home’s size, insulation, and efficiency needs. Our HVAC contractors in Chula Vista, CA offer free estimates and explain all your options clearly, ensuring you make an informed choice that fits your comfort goals and long-term budget.

  • Do you install smart thermostats and advanced climate controls?

    Yes. We install and program modern smart thermostats that adapt to your daily routine, saving energy while maintaining comfort. These devices make it easier to control temperature remotely, track usage trends, and lower energy bills without sacrificing convenience or performance.

  • How can I schedule service or request an estimate?

    Scheduling is simple—just call, email, or submit a form through our website. Our friendly staff will respond the same day to confirm your appointment and address any questions. When you choose Della-Mora’s experienced HVAC contractors in Chula Vista, CA, you’re choosing a team that values communication, punctuality, and exceptional service from start to finish.