Solar and HVAC Services in La Mesa, CA
The experienced team at Guthrie & Sons Heating, Air & Solar provides essential home services to homeowners throughout La Mesa.
Our NATE-certified technicians are here for all your repair, replacement, installation, and maintenance needs. We’re licensed, insured, and service all major brands with upfront pricing you can trust. Call our office or schedule an appointment online—we’re always happy to help.
The Best Heating, Cooling, Indoor Air Quality, and Solar Services in La Mesa, CA
Comfort at home isn’t just about the thermostat—it’s about peace of mind, clean air, and systems that work when you need them. At Guthrie & Sons, we specialize in heating and cooling, indoor air quality, and solar services that make your home feel just right, every day of the year.
Whether you need a quick repair, a full system replacement, or help improving your energy efficiency, we’re here with solutions that fit your needs and your budget. We proudly serve homeowners and business owners in La Mesa with the kind of care and attention we’d want for our own families.
Let’s make your space more comfortable—schedule your HVAC or solar service online or give us a call today.
The Guthrie Way
You Deserve the Best Team By Your Side‒Here’s What Sets Us Apart
At Guthrie & Sons, we believe good service is more than just doing the job right—it’s about treating people with respect and delivering real value. Here’s what we bring to every appointment:
5-Star Service
From your first call to the final walkthrough, we make the process easy, respectful, and stress-free. Our team values your time and home, and it shows in how we show up.
Honest Pricing
You’ll get clear pricing upfront before any work begins—no surprises, no sales pressure. We walk you through your options so you can make confident, informed decisions.
Expert Technicians
Our NATE-certified technicians know how to service all types of heating and cooling systems. Whether it’s a small fix or a major install, you can count on professional results.
Family Values
We’re a local, family-run company that treats every customer with honesty and respect. We take pride in delivering service we’d want for our own families.
No Upsells
Our goal is to help—not upsell. We’ll explain what your system needs, why it matters, and let you decide what’s right for your home and budget.
Protect Your Investment With Preventive HVAC Maintenance
La Mesa’s warm summers and cool nights mean your HVAC system doesn’t get much of a break. And when systems work hard year-round, they need regular care to stay efficient and reliable.
Routine maintenance improves performance, lowers energy bills, and helps you avoid surprise breakdowns—especially during a heatwave or a cold snap.
Join Our USA Membership Plan
Our USA Membership Plan makes staying on top of maintenance simple. You’ll get scheduled service reminders, priority appointments, reduced diagnostic fees, and discounts on repairs. Whether you have a heat pump, central system, or ductless setup, we’ve got a plan to match.
Ask about membership during your next visit or call now to sign up!
Flexible Financing and Real Savings When You Need It Most
We get it—no one’s thrilled about replacing their heating or cooling system, especially when it’s unexpected. At Guthrie & Sons, we make it easier to invest in your comfort with financing options and by helping you access available savings.
Whether you’re upgrading an old heater, switching to energy-efficient equipment, or installing a brand-new cooling system, we’ll guide you every step of the way.
Flexible HVAC Financing Plans
We understand that replacing your heating system or installing a new cooling solution isn’t always something you plan for. If your heat and air conditioning system fails unexpectedly, you shouldn’t have to put off your comfort due to cost.
We offer financing options to fit your budget—so you can get the system you need now and pay over time.
Ask About Available Rebates and Tax Credits
Upgrading to energy-efficient cooling systems could make you eligible for local rebates or federal tax incentives. We stay up to date on the latest offers and will walk you through the paperwork to help you get every dollar you qualify for.
Heating and Cooling Services in La Mesa, CA
La Mesa has a warm, dry climate most of the year, but don’t let the sunshine fool you—those cool evenings can sneak up fast. Whether it’s a hot August afternoon or a chilly December night, your comfort depends on reliable heating and air conditioning.
Guthrie & Sons offers full-service heating and cooling support in La Mesa, CA, to help you maintain the perfect indoor temperature at all times.
Air Conditioning Services
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Central air conditioning systems are a popular choice for La Mesa homes, thanks to our long, dry summers. But heat, dust, and age can wear down your AC faster than you’d expect. With our air conditioning services in La Mesa, we install, repair, maintain, and replace cooling systems that keep up with your lifestyle and local climate.
Air Conditioning Installation
Getting the right air conditioner isn’t just about brand—it’s about matching your home’s size and airflow needs. Our air conditioning installation team helps you choose a properly sized, energy-efficient unit and installs it with care so you stay cool for years to come.
Air Conditioning Maintenance
Season after season, dust, long run times, and even small refrigerant leaks can reduce your AC’s performance. With our air conditioning maintenance, we deep clean the coils, test airflow, measure temperature differentials, and inspect every component to prevent breakdowns.
Air Conditioning Repair
AC problems rarely show up all at once—they creep in slowly. If you notice higher energy bills, uneven cooling, or strange smells from the vents, our air conditioning repair service can help. We pinpoint the exact issue and fix it right, whether it’s a weak capacitor or a dirty blower motor.
Air Conditioning Replacement
An AC that’s over a decade old may still run, but at a much higher cost. If your unit is constantly cycling or uses outdated refrigerant, we’ll discuss your air conditioning replacement options, help you compare energy efficiency ratings, and install a new system.
Mini Split Services
Ductless mini splits work by moving heat in or out of individual rooms using small, wall-mounted air handlers connected to an outdoor unit. They offer powerful, zoned heating and cooling without the need for ducts. At Guthrie & Sons, we offer complete mini split services in La Mesa, including installation, maintenance, repair, and replacement.
Mini Split Installation
Mini splits can be installed in just about any space—bedrooms, garages, offices, or new additions—without the major renovation of adding ducts. We offer ductless systems designed for cooling only or heat and cool options for year-round comfort.
Mini Split Maintenance
Regular maintenance keeps your mini split running efficiently and prevents long-term wear. We clean filters, inspect coils, check for drainage clogs, and test all electrical connections. Since La Mesa sees long cooling seasons, biannual ductless mini split maintenance is recommended.
Mini Split Repair
Strange smells, blinking error lights, or weak airflow? These are signs it’s time for a mini split repair. We investigate electrical faults, test sensors, replace worn-out fans, and flush drainage systems to bring your zoned comfort system back to life—fast.
Mini Split Replacement
Older mini splits may run constantly but never cool the room or show repeated error codes that just won’t clear. When repairs become too frequent or parts are no longer available, we recommend a full ductless mini split replacement.
Heat Pump Services
Heat pumps work smarter—not harder—by using thermal energy from the air around your home. They offer a simple way to heat and cool your home year-round with one system, without burning fuel or relying on traditional air conditioning. Whether you’re installing your first unit or upgrading an older one, Guthrie & Sons provides trusted heat pump services in La Mesa.
Heat Pump Installation
Every home is different, and your heat pump system should reflect that. We take time to evaluate your square footage, insulation levels, and layout before performing a heat pump installation designed for quiet operation and balanced comfort.
Heat Pump Maintenance
To keep your system running its best through seasonal shifts, we recommend scheduled heat pump maintenance twice a year. Our team checks reversing valves, refrigerant balance, electrical connections, and runs tests to ensure your system heats and cools evenly.
Heat Pump Repair
A heat pump that’s struggling might blow lukewarm air, cycle constantly, or not respond at all. If something feels off, our heat pump repair service can help. We’ll track down the cause—be it a stuck relay, failed sensor, or compressor issue—and get your system back in sync.
Heat Pump Replacement
Heat pumps age like any other system, and once they hit 12 to 15 years, they often lose efficiency. With our heat pump replacement service, we’ll assess your current setup, recommend better-matched equipment, and install a modern, energy-efficient system.
HVAC Services
Whether you’ve got a central setup, a heat pump, or a mini split air conditioner, Guthrie & Sons offers HVAC services in La Mesa that are tailored to your home, your comfort, and the local climate. We’re here to keep your equipment running smoothly and your energy bills under control year-round.
HVAC Installation
The key to a long-lasting system is getting it installed right from the start. With every HVAC installation, we perform a full home assessment, choose a system with the right SEER rating and capacity, and handle ductwork, thermostats, and zoning setup.
HVAC Maintenance
Routine HVAC maintenance saves you money and headaches. We clean evaporator and condenser coils, check for worn belts or connections, replace filters, and test overall performance. Especially in La Mesa’s warm seasons, this tune-up keeps your system running quietly and efficiently.
HVAC Repair
When your home starts feeling stuffy, uneven, or just off, it’s time for a closer look. Our HVAC repair service targets the issue fast—whether it’s a bad capacitor, clogged drain line, or thermostat miscommunication—and gets your comfort back on track with minimal hassle.
HVAC Replacement
Sometimes, repairs just aren’t worth it—especially when your unit is older or inefficient. If that’s the case, we’ll guide you through an HVAC replacement, walk you through new models with better energy ratings, and install the one that matches your home’s needs and budget best.
Heating Services
La Mesa may enjoy mostly sunny skies, but once the sun sets, temperatures can drop quickly—especially in the winter months. That’s when having a reliable heating system really matters. At Guthrie & Sons, we provide full-service heating services in La Mesa. We keep your system running smoothly so you can warm up whenever you want to.
Heating Installation
We look at your insulation, square footage, ductwork, and energy goals before recommending the ideal heating installation—whether it’s a high-efficiency heat pump, traditional furnace, or zoned ductless setup.
Heating Maintenance
Staying warm shouldn’t come with surprise repair bills. Our heating maintenance service includes cleaning internal components, adjusting settings, testing safety systems, and more. It’s a simple way to extend your system’s life, boost efficiency, and stay ahead of unexpected issues.
Heating Repair
From low airflow to inconsistent heat, when something feels off, it usually is. Our heating repair team tackles problems fast with thorough diagnostics and expert solutions. We’ll get your system back on track quickly and affordably.
Heating Replacement
If your heater takes forever to warm up or it’s costing you more to run than it used to, a heating replacement may be the better option. We’ll assess your current system’s age and condition and help you transition to something that heats faster, runs cleaner, and keeps your bills in check.
Furnace Services
Even in La Mesa’s mild winters, a dependable furnace makes a noticeable difference in your indoor comfort. Whether your home uses a gas or electric furnace, Guthrie & Sons offers trusted furnace services in La Mesa with honest guidance, professional care, and reliable results—every time.
Furnace Installation
We help you choose between gas and electric furnace installation based on what works best for your home and energy needs. Gas models are known for powerful, fast heat, while electric furnaces offer quiet operation and cleaner performance in homes without natural gas access.
Furnace Maintenance
Regular furnace maintenance is the key to a system that runs clean, safe, and efficiently. Our team checks airflow, inspects the burners and electricals, replaces dirty filters, and tests the thermostat. One visit a year keeps your unit prepared for those cooler nights.
Furnace Repair
Strange smells, unusual sounds, or a unit that won’t start are all signs that it’s time for a furnace repair. In La Mesa, the most common culprits are clogged filters, worn ignition parts, or limit switch issues. We’ll find the source and fix it fast so you’re not stuck in the cold.
Furnace Replacement
We offer furnace replacement when it’s clear your unit isn’t keeping up or repairs no longer make financial sense. Our team will evaluate your current system, show you efficient upgrade options, and make the transition easy and seamless.
Indoor Air Quality Services in La Mesa, CA
Your home in La Mesa might feel clean, but what about the air you’re breathing? Everyday activities—from cooking to cleaning—can release allergens and particles into the air. Add in humidity or a poorly ventilated HVAC system, and your indoor environment can start to feel stuffy or stale.
That’s why Guthrie & Sons provides a full range of indoor air quality services in La Mesa, helping homeowners feel better and gain more control over their indoor environment.
Air Purifier Installation
We install whole-home air purifiers that trap dust, allergens, and other airborne particles before they circulate. It’s an easy way to help your family breathe cleaner, healthier air every day.
Air Purifier Repair
If your air purifier isn’t running efficiently or airflow feels weak, we’ll find the problem and fix it fast. Our team handles filter replacements, wiring issues, and system recalibrations.
CO Detector Installation
A working carbon monoxide detector is a must for any home with fuel-burning appliances. We install CO detectors in key spots and test them for proper function and reliability.
Dehumidifier Installation
Too much humidity indoors can lead to mold and stuffy air. Our team installs whole-home dehumidifiers that balance moisture levels and improve air quality across your home.
Dehumidifier Repair
From clogs to control panel errors, we troubleshoot your dehumidifier to get it back in shape. With our repairs, you’ll enjoy better air balance and fewer humidity-related issues right away.
Duct Sealing
Leaky air ducts lower your HVAC’s efficiency and let in dust and debris. We locate those leaks and seal them tight, improving airflow and indoor air quality.
Media Air Cleaner Installation
For next-level filtration, a media air cleaner installation adds a thick, high-efficiency filter that traps microscopic particles like pollen, smoke, and even viruses.
Thermostat Installation
A thermostat installation upgrade can transform how you manage comfort and energy use. We install smart or programmable models that help regulate temperature and humidity.
Thermostat Repair
If your heating or cooling feels off, the issue may be your thermostat. Our thermostat repair service includes testing connections, replacing faulty sensors, and reprogramming settings.
Thermostat Replacement
Outdated thermostats are often less efficient. We offer thermostat replacement with modern models that offer better temperature accuracy, energy-saving settings, and user-friendly controls.
UV Air Cleaner Installation
A UV air cleaner works inside your ductwork to kill airborne bacteria, mold, and viruses using safe ultraviolet light. It’s a great add-on for families concerned about germs and air cleanliness.
UV Light Installation
We provide UV light installation near HVAC coils and ducts to stop mold from growing where moisture builds up. It’s an easy way to improve indoor air and keep your system clean.
Heat Pump Water Heater Services in La Mesa, CA
If you’re in the market for a new water heater, consider a heat pump water heater. These efficient systems work similarly to heat pumps, using electricity to take heat from the air and use it to heat water for your home. Also known as hybrid electric water heaters, they’re ideal for places with climates like La Mesa’s. Our expert team installs these systems and can help you determine if they fit your needs and budget. Interested in a quote? Just get in touch with our team!
Solar Services in La Mesa, CA
Along with dependable HVAC solutions, Guthrie & Sons proudly offers expert solar panel installation in La Mesa. With nearly two decades of experience serving Southern California, we know what works best for our local climate and rooftops. That’s why we install high-output solar panels backed by strong manufacturer warranties and proven long-term performance.
Making the switch to solar can reduce your reliance on the grid, lower your monthly energy bills, and put you on the path to true energy independence. Want to learn more? Give us a call or schedule your solar consultation online today.
Save More, Stress Less: Explore Our Current Offers
Whether it’s a discount on a new heat pump or a service coupon for your next tune-up, we’ve got options to help lower your costs.
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
How much does AC repair cost?
It depends on the issue—minor fixes like capacitor replacements are less expensive than major repairs like compressor failure. We’ll always walk you through pricing upfront with no surprises.
Do you service all units, including heat pumps?
Yes! We service all major HVAC brands, including heat pumps, furnaces, ductless systems, and traditional AC units—residential or commercial.
What are the benefits of having a central heating system?
Central heating provides even, consistent warmth throughout your home and works with your thermostat for better energy control and comfort.
Are smart thermostats worth it?
Absolutely. Smart thermostats can reduce energy use, learn your habits, and help you manage indoor temperature more efficiently from your phone.
What temperature should I set my water heater?
For safety and energy savings, we recommend setting your water heater to 120°F. It’s hot enough for daily use but reduces the risk of scalding and saves energy.
OUR REVIEWS
REAL REVIEWS From Your La Mesa Neighbors
Take a look at our customer reviews to see why people keep coming back to us year after year. We’re proud of our reputation—and we’re ready to earn your five stars, too.
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Schedule a Service Appointment With Guthrie & Sons
At Guthrie & Sons Heating, Air & Solar, we’re proud to serve the La Mesa community with honest, dependable HVAC and solar services. Whether you need a quick repair, a full system replacement, or just routine maintenance, our friendly team is here to help. We work on all brands, offer seasonal specials, flexible financing, and exclusive discounts for seniors, military members, and veterans.
Give us a call or schedule online today—we’ll treat your home like our own and make your comfort our priority.
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