Solar and HVAC Services in Carlsbad, CA
When it comes to keeping your home comfortable in sunny Carlsbad, California, Guthrie & Sons Heating, Air & Solar has you covered. Our skilled team has the experience and knowledge to address any HVAC issue with ease.
With us, you can count on a cozy home when the evenings turn cool and a refreshing escape during hot, sunny days. Plus, our solar solutions help you make the most of Carlsbad’s sunshine for greater energy savings. Schedule an appointment or request an estimate today!
Trusted Heating, Cooling, Indoor Air Quality, and Solar Solutions in Carlsbad, CA
At Guthrie & Sons, we specialize in keeping homes and businesses in Carlsbad comfortable—no matter the season. Whether you’re looking to beat the summer heat or stay cozy when the evenings turn cool, our team delivers trusted HVAC solutions designed to match your lifestyle, your home, and your budget.
We’re a family-owned company with deep local roots and a reputation for honest service, top-quality work, and no upsells—ever. We don’t have time for that and know you don’t, either. Our experienced technicians are here to help with everything from air conditioner installation and heating repair to indoor air quality upgrades and energy-efficient heat pump systems.
We also offer solar energy and heat pump water heaters to help Carlsbad home and business owners take full advantage of the California sunshine and lower their utility bills long term.
When it comes to climate control, Guthrie & Sons brings the experience, professionalism, and personal care you deserve. Contact us today for HVAC services in Carlsbad, CA!
The Guthrie Way
Service Backed by Integrity, Experience, and Family Values
Choose Guthrie & Sons for your heating, cooling, and solar needs, and enjoy the benefits of a family-owned, NATE-certified company. We provide upfront pricing, free estimates, and special offers to fit your budget.
Family-Owned
We’re not just a company—we’re a local family business built on trust, reliability, and doing right by our community. When you choose Guthrie & Sons, you’re choosing people who care.
5-Star Service
We show up when we say we will, get the job done right the first time, and leave your home better than we found it. Every customer matters—and we treat you like family.
Skilled Technicians
When it comes to your home’s comfort, training and experience make all the difference. That’s why our technicians are NATE-certified—the highest level of certification in the HVAC industry.
Honest Pricing
You’ll never be surprised by hidden fees or confusing estimates. We explain everything clearly, walk you through your options, and provide transparent, reasonable pricing for the work.
No Pushy Sales
Our job is to help you make smart decisions—not to talk you into something you don’t need. If a simple repair will do the trick, that’s what we’ll do.
Keep Your HVAC System Running Strong With Our USA Membership Plan
A well-maintained HVAC system is safer, more efficient, and less likely to leave you scrambling for last-minute repairs. With the Guthrie & Sons USA Membership Plan, you’ll get:
- Scheduled maintenance reminders so you never miss a tune-up
- Priority scheduling when something goes wrong
- Discounts on repairs and reduced service call fees
Our maintenance plan is designed to protect your comfort and your wallet—because proactive care is always better than reactive fixes. Read more about our plan and reach out to sign up!
Flexible Financing for Your Heating, Cooling, and Solar Needs
When unexpected repairs or replacements catch you off guard, we’re here to help. Guthrie & Sons offers flexible financing options to make installing new systems or major repairs more manageable. Whether it’s a new high-efficiency HVAC system, a heat pump installation, or solar upgrades, we’ll help you explore affordable monthly payment options that work with your budget.
Heating and Cooling Services in Carlsbad, CA
Your home should feel comfortable in every season—and that starts with a well-functioning HVAC system. At Guthrie & Sons, we provide a full range of heating and cooling services in Carlsbad designed to keep your indoor climate just right all year long.
From new system installations to emergency AC repair, we bring expert care, professional HVAC insight, and personalized service to every job. Explore our full list of services below or reach out to book your appointment—we’re here to help.
Air Conditioning Services
Living in Carlsbad means enjoying warm, sunny days most of the year, but that also means your cooling system needs to work efficiently to keep up. We offer air conditioning services in Carlsbad, CA, that improve air flow, lower utility bills, and create a more energy-efficient home.
Whether you’re installing a new unit, replacing an outdated system, or keeping up with routine AC maintenance, our licensed technicians have the experience to get it done right.
Air Conditioning Installation
We provide custom air conditioner installations for homes of all sizes—whether you’re upgrading an older system or outfitting a newly built property. Our team will size your unit accurately, install your ductwork if needed, and ensure your system is optimized for performance and SEER-rated energy efficiency.
Air Conditioning Maintenance
Preventative AC maintenance keeps your system running smoother, longer. Our air conditioning tune-ups include cleaning coils, checking refrigerant levels, inspecting electrical components, and clearing your condensate drain line to protect performance and extend system life.
Air Conditioning Repair
Noticing weak air flow or warm air coming from your vents? If your cooling system isn’t doing its job, we provide fast, honest air conditioning repair services in Carlsbad. We use professional tools and years of hands-on experience to diagnose and fix the issue—usually in just one visit.
Air Conditioning Replacement
If your air conditioner is more than 10–12 years old, struggles to cool your space, or needs frequent repairs, it may be time for an air conditioning replacement. We’ll help you choose a new, energy-efficient cooling unit that fits your home and budget.
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Mini Split Services
Looking for a better way to cool and heat individual rooms in your home? Our ductless mini split services in Carlsbad offer a flexible, energy-efficient solution for spaces where traditional HVAC systems fall short.
At Guthrie & Sons, we specialize in the installation, repair, maintenance, and replacement of ductless mini split systems that keep your home comfortable while helping you save on utility bills.
Mini Split Installation
We install ductless mini splits in garages, sunrooms, home offices, guest suites, older homes, and anywhere ducts don’t reach. These energy-efficient systems offer zoned heating and cooling with no major construction required. Many installations qualify for rebates or tax incentives—ask us how to save.
Mini Split Maintenance
Routine maintenance keeps your ductless mini split running efficiently and helps prevent costly breakdowns. We clean filters, check the heat exchange, inspect electrical components, and ensure smooth air flow. Regular mini split tune-ups protect performance and extend the life of your system.
Mini Split Repair
If your ductless mini split isn’t heating or cooling like it should, we’re ready to help. Whether it’s poor temperature control, error codes, or strange noises, our technicians quickly diagnose and repair the issue. We perform mini split repairs on all major brands and restore comfort fast.
Mini Split Replacement
When repairs no longer cut it or your unit is driving up utility bills, a mini split replacement may be the best solution. We’ll evaluate your current system and recommend a high-efficiency upgrade tailored to your home. Enjoy better comfort, lower costs, and reliable indoor climate control.
Heat Pump Services
A smart solution for year-round comfort, heat pumps offer both heating and cooling in one sleek, energy-efficient system. In Carlsbad’s mild climate, they’re a perfect fit—pulling warmth in during cooler months and pushing it out when things heat up.
Guthrie & Sons has all of the heat pump services in Carlsbad that you need, from installation to repair and replacement, to keep your home comfortable throughout the year.
Heat Pump Installation
Installing a heat pump is one of the most efficient ways to heat and cool your home—and our team makes the process easy. We assess your home’s layout, insulation, and air flow needs to design a system that balances temperature control and energy use.
Heat Pump Maintenance
Heat pumps work twice as hard as single-purpose systems—running year-round to keep your indoor climate just right. That’s why regular heat pump maintenance is so important. Our technicians follow a detailed checklist to tune up your heat pump system and help it last longer.
Heat Pump Repair
Even the most reliable systems can run into trouble. If your heat pump is blowing cold air in winter, won’t cool your space evenly, or cycles constantly, it may be time for a heat pump repair. We handle everything from electrical issues and faulty sensors to compressor problems and refrigerant leaks.
Heat Pump Replacement
When your current system is aging, underperforming, or needs frequent repairs, a full heat pump replacement might be the smarter long-term move. We’ll help you select a high-efficiency system so you get better comfort with less energy waste. Our installation process is quick, clean, and backed by strong warranties.
HVAC Services
Your home’s comfort isn’t just about one piece of equipment—it depends on how your air conditioner, heater, thermostat, and other systems work together. At Guthrie & Sons, we offer HVAC services in Carlsbad to make sure everything runs efficiently and reliably.
From improving air flow to fine-tuning temperature control, we keep your home’s heating and cooling systems working the way they should—without breaking your budget.
HVAC Installation
A high-performing HVAC system isn’t just about buying the latest model—it’s about installing a solution that aligns with your home’s layout, airflow needs, and energy goals. Our team handles every step of the HVAC installation process, from load calculations to duct design, ensuring your heating and cooling system delivers reliable comfort without overworking.
HVAC Maintenance
Every HVAC system needs routine care to stay efficient and avoid mid-season breakdowns. Our HVAC maintenance visits go beyond basic checks—we fine-tune performance, clean key components, and identify issues early to prevent them from turning into expensive HVAC repairs.
HVAC Repair
Noticed inconsistent temperatures or strange sounds coming from your system? Maybe the airflow feels weak, or your thermostat isn’t responding like it should. These are signs your unit needs an HVAC repair. Whether your issue stems from a failed capacitor, blocked duct, or malfunctioning control board, we’ll get your heating and air conditioning system back in action.
HVAC Replacement
Older systems lose efficiency, struggle with temperature control, and often cost more to run than to replace. We help homeowners in Carlsbad choose energy-efficient options tailored to their home’s size, layout, and comfort goals. Once installed, we walk you through system features and tips for long-term care so you get the most from your HVAC replacement.
Heating Services
Even in Carlsbad, the temperature can dip low enough to make your home feel uncomfortable—especially in the early mornings or during cool evenings. That’s when you really appreciate having a dependable heating system in place. Guthrie & Sons provides home heating solutions designed to bring comfort, reliability, and efficiency to every room in your house.
Whether you’re dealing with an aging heater, planning a new installation, or just want to stay ahead of future issues, we offer a full range of heating services in Carlsbad.
Heating Installation
We install furnaces, heat pumps, and ductless mini splits that are built for performance, durability, and energy-efficient operation. Our team takes time to understand your home’s layout and heating needs so we can recommend the right equipment, properly sized for consistent comfort and smart temperature control.
Heating Maintenance
Our seasonal heating maintenance service includes cleaning critical components, checking for wear and tear, testing airflow, and verifying that your system is operating safely. Preventive care keeps your indoor climate balanced, helps avoid mid-winter breakdowns, and protects your investment by extending your system’s lifespan.
Heating Repair
Maybe your heater won’t turn on, blows lukewarm air, or makes loud, unfamiliar sounds. Whatever the issue, our technicians respond quickly with expert diagnostics and real solutions. We don’t waste your time or push unnecessary fixes. Instead, we get to the root of the problem and make sure your heating repair solves the issue.
Heating Replacement
During a heating replacement, we’ll evaluate your current setup, talk you through modern, energy-efficient options, and help you choose the right solution for your space and budget. Our team handles everything so you can enjoy better comfort, lower energy use, and peace of mind for years to come.
Furnace Services
When the cool coastal air settles in, a reliable furnace can make all the difference. Whether you’re installing a new system, troubleshooting a noisy unit, or prepping your equipment for the season, Guthrie & Sons offers professional furnace services in Carlsbad to keep your home warm, efficient, and worry-free.
We work with all major brands and system types, providing expert guidance and honest service at every step.
Furnace Installation
Every home has different heating demands, and installing the right furnace starts with understanding yours. We take into account square footage, insulation levels, and air flow patterns to size your system correctly and avoid common problems like short cycling or uneven temperatures.
Furnace Maintenance
Think of annual furnace maintenance as your system’s health check-up. It’s the best way to catch minor issues before they snowball into expensive problems. We inspect burners, test the heat exchange, check electrical components, and make sure your system is running safely and efficiently.
Furnace Repair
Some problems are hard to ignore: a heater that won’t turn on, unusual banging or rattling noises, or rooms that stay chilly no matter how high the thermostat is set. When that happens, we’re ready to step in. Our team specializes in fast, accurate furnace repair, from worn-out blower motors to clogged filters and failing ignitors.
Furnace Replacement
Outdated systems can drive up energy use, deliver poor temperature control, and even pose safety risks. We’ll help you choose a new, energy-efficient furnace replacement that fits your home’s needs and budget. Our team will remove the old unit, handle the installation, and make sure everything’s running perfectly before we leave.
Indoor Air Quality Services in Carlsbad, CA
You might not always see what’s in the air, but if your home feels stuffy or dusty or triggers allergies, your indoor air quality could be the culprit. At Guthrie & Sons, we offer indoor air quality services in Carlsbad to clean, balance, and refresh the air in your home.
Whether you’re dealing with high humidity, lingering odors, or poor air flow, we’ll help create a healthier indoor climate that supports your comfort and well-being.
Air Purifier Installation
We install whole-home air purifiers that trap dust, pollen, and airborne irritants for cleaner, healthier indoor air. Connected to your HVAC system, they purify every room at once.
Air Purifier Repair
If your air purifier isn’t doing its job, we’ll inspect and repair it fast. Restore your indoor air quality without missing a beat.
CO Detector Installation
Protect your family with properly placed carbon monoxide detectors. We install reliable units to ensure constant monitoring and safety.
Dehumidifier Installation
A whole-home dehumidifier helps reduce mold, musty odors, and excess moisture. We’ll install a system that balances comfort and air quality.
Dehumidifier Repair
If your dehumidifier isn’t draining or controlling humidity, we’ll get it working again. Quick service keeps your indoor climate under control.
Duct Sealing
Leaky ducts spread dust and waste energy. We seal your ductwork to improve airflow, temperature control, and efficiency.
Media Air Cleaner Installation
Media air cleaners capture fine particles other filters miss. We install high-efficiency units that support allergy relief and better air quality.
Thermostat Installation
We install programmable and smart thermostats that improve temperature control and save energy. Take full control of your indoor climate today.
Thermostat Repair
A faulty thermostat can throw off your heating and cooling. We troubleshoot and repair issues to restore consistent comfort.
Thermostat Replacement
Upgrade to a modern thermostat with better features and energy savings. We’ll replace your old unit and handle the setup for you.
UV Air Cleaner Installation
UV air cleaners kill bacteria, mold, and viruses in your HVAC system. We install systems that improve your home’s air from the inside out.
UV Light Installation
Installed near your coils, UV lights help prevent microbial growth. Cleaner equipment means better air quality and improved system performance.
Solar Services in Carlsbad, CA
The sun shines almost every day in Carlsbad, so why not put it to work for your home? At Guthrie & Sons, we design and install solar energy systems that help you take control of your power, cut utility bills, and reduce your dependence on the grid.
From rooftop solar panel installation to backup batteries and EV chargers, we make clean energy simple and stress-free. Choosing solar isn’t just about today’s savings—it’s a smart investment that protects you from rising energy costs and adds lasting value to your property. When you’re ready to make the switch, we’re ready to make it seamless.
Heat Pump Water Heater Services in Carlsbad, CA
Hot water doesn’t have to come at a high energy cost. With a heat pump water heater, your home can enjoy reliable hot water while using a fraction of the energy of traditional systems. These systems pull warmth from the surrounding air, making them an incredibly energy-efficient option.
At Guthrie & Sons, we install and service heat pump water heaters that are built for long-term performance and lower utility bills. Whether you’re upgrading an old tank or looking to improve your home’s efficiency, we’ll help you choose the right model and handle the entire process from start to finish. It’s a simple way to save energy, cut costs, and upgrade your daily comfort—all at once.
Heating and Cooling Offers You Can’t Miss
Big savings, same great service. See what offers are available now in Carlsbad for our favorite customers.
PROMOTIONS
CURRENT OFFERS
- INDOOR AIR QUALITY
$150 Off I-Wave Cold Plasma Filter
Must present offer at time of service. Cannot combine with other offers. Not valid on prior sales. Restrictions apply. See dealer for details. Offer expires 3/31/25.
- REPAIR
$100 Off Repair
Valid on a central heating or air conditioning system. Repair must be over $900. Must present offer at time of service. Cannot combine with other offers. Not valid on prior sales. Restrictions apply. See dealer for details. Offer expires 3/31/25.
- REPAIR
Free Diagnostic w/ a Repair
Your diagnostic service call fee will be waived if you proceed with a repair. Cannot combine with other offers. Restrictions apply. See dealer for details. Offer expires 4/30/25.
Frequently Asked Questions
Can whole-house dehumidifier installation really save you money?
Yes—by reducing moisture, your system won’t have to work as hard to cool your home. That means better energy efficiency and lower utility bills year-round.
What options are available for air conditioning installation in Carlsbad?
We install central air, ductless mini splits, heat pumps, and high-efficiency systems. Our team helps you choose the right fit based on your home, needs, and budget.
Can I get a maintenance plan for my HVAC system in Carlsbad?
Absolutely. Our USA Membership Plan includes seasonal tune-ups, priority scheduling, and repair discounts—all designed to save you money and keep your system running smoothly.
What are the most common HVAC problems?
Dirty filters, low refrigerant, thermostat issues, and electrical failures are all common. Regular maintenance helps catch these early and avoid costly repairs.
How long will it take to get my HVAC unit installed or replaced?
Most installations are completed in one day. We’ll handle everything quickly and cleanly—so you’re back to comfort with minimal disruption.
REVIEWS
Our Reviews Say It Best
Real comfort, real results—that’s what our customers talk about! From quick repairs to full system upgrades, Carlsbad homeowners count on us for honest service and dependable work.
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Make an Appointment With Our Team Today
Want a more comfortable, energy-efficient home? Let Guthrie & Sons Heating, Air & Solar take care of your HVAC and solar needs so you can focus on enjoying life by the coast. Schedule your heating, air conditioning, or solar service in Carlsbad today by calling (619) 269-3013 or booking online. We’re here whenever you need us!
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