Services
Complete HVAC Solutions for Every Need
At Guido’s Service, we offer a full range of heating, cooling, and air quality services for both residential and commercial clients. From installations to emergency repairs, maintenance, and indoor comfort upgrades—we’re here to keep your system running smoothly all year long with professional, reliable, and personalized attention.
Floor Furnace Repair Services in Oakland
At Guidos Service, we specialize in floor furnace repair services for homeowners in Oakland, Hayward, and throughout the East Bay. Floor furnaces are a unique type of heating system, commonly found in older homes, often installed directly into the floor above a crawl space. While these units provide reliable heat when maintained properly, they can be challenging to service—especially in houses with tight or difficult-to-access crawl spaces. That’s where we excel.
We go where others won’t. Many HVAC contractors avoid servicing older heating systems, but our team at Guidos Service has the expertise and dedication to restore and maintain these classic units. Whether your floor furnace isn’t heating evenly, produces unusual odors, or has stopped working altogether, we provide thorough inspections, accurate diagnostics, and cost-effective repairs.
Our technicians understand the intricacies of vintage equipment and specialize in troubleshooting issues that newer companies often overlook. From repairing gas valves and pilot assemblies to cleaning and restoring airflow, we ensure your system operates safely and efficiently.
For homeowners who rely on a floor furnace as their primary source of heat, we know how important fast, dependable service is. That’s why Guidos Service is committed to providing prompt repairs, honest recommendations, and long-lasting solutions.
When you need trusted floor furnace specialists in Oakland, Hayward, or anywhere in the East Bay, Guidos Service is the team that gets the job done right.
HVAC Installation
At Guido’s Service, we specialize in professional HVAC installation for both residential and commercial clients across Contra Costa and Alameda counties. With over 30 years of experience, we know that a properly installed system is key to long-term comfort, efficiency, and performance.
Every installation begins with a full assessment of your space and your specific heating and cooling needs. We take into account factors such as square footage, insulation, number of rooms, and usage patterns to recommend the most suitable system—whether it’s a central air unit, furnace, heat pump, or ductless mini-split.
We work with trusted brands and high-efficiency equipment to help reduce your monthly energy bills and improve indoor air quality. Our licensed technicians follow all building codes and safety standards to ensure a smooth and compliant installation process. We also handle any required permits, so you can relax knowing everything is done by the book.
After installation, we test the entire system to verify proper operation, airflow, and temperature control. We also take time to walk you through the controls, thermostat functions, and maintenance tips to keep your system running smoothly.
Whether you’re upgrading an outdated unit or building a new property, Guido’s Service provides expert HVAC installations backed by honest pricing, clear communication, and dependable workmanship. Your comfort is our mission—start with a free consultation today.
Commercial HVAC Services
At Guido’s Service, we understand that comfort, efficiency, and reliability are critical to the success of any business. That’s why we offer specialized commercial HVAC services for offices, retail spaces, restaurants, warehouses, and other commercial properties throughout Contra Costa and Alameda counties.
Commercial HVAC systems are more complex than residential systems, requiring advanced knowledge, proper planning, and precise execution. With over 30 years of experience, our team is equipped to handle everything from large-scale installations and replacements to scheduled maintenance and urgent repairs.
We begin every commercial project with a comprehensive assessment of your building’s layout, usage patterns, and heating and cooling demands. Based on this analysis, we design and install a system tailored to your business—whether it involves rooftop units, packaged systems, zoning controls, or ductwork modifications.
In addition to installation, we provide preventive maintenance programs that keep your system operating efficiently year-round. Regular servicing not only helps avoid costly breakdowns but also ensures consistent indoor air quality and comfortable working conditions for employees and customers.
When issues arise, we respond quickly to minimize downtime and keep your operations running smoothly. We know that time is money, and our goal is to restore comfort with minimal disruption to your business.
From system upgrades and energy optimization to emergency service and routine inspections, Guido’s Service is your trusted partner in commercial HVAC solutions. Contact us today and let us help your business stay cool in the summer, warm in the winter, and productive all year long.
System Replacement
If your current HVAC system is outdated, inefficient, or constantly in need of repairs, it may be time for a full system replacement. At Guido’s Service, we help homeowners and business owners throughout Contra Costa and Alameda counties upgrade to modern, energy-efficient HVAC solutions that deliver better comfort, performance, and reliability.
Replacing your system isn’t just about swapping out old equipment—it’s about evaluating your entire setup to ensure optimal results. Our team begins with a thorough inspection of your current system, including ductwork, thermostats, airflow, and energy consumption. Based on your specific needs, we recommend the best replacement options suited for your space, budget, and long-term goals.
We work with top-rated brands and offer high-efficiency units that not only meet today’s energy standards but can significantly lower your utility bills over time. Our licensed technicians handle the entire process from start to finish—removing the old system, preparing the space, installing the new unit, and performing full system tests to ensure everything works perfectly.
Upgrading your HVAC system is also an opportunity to improve your indoor air quality and take advantage of smart thermostat technology. We make sure you’re comfortable with the new setup by explaining system functions and providing tips for care and maintenance.
With over 30 years of experience, Guido’s Service delivers reliable system replacements backed by quality, integrity, and personalized service. Let us help you make a smart investment in year-round comfort and energy savings.
Emergency Repairs
When your HVAC system breaks down unexpectedly, you need fast, dependable service you can count on. At Guido’s Service, we offer prompt emergency repair services for both residential and commercial customers throughout Contra Costa and Alameda counties—because we know that comfort can’t wait.
Whether it’s a failing furnace on a cold winter night or a malfunctioning air conditioner during a summer heatwave, our experienced technicians are ready to respond quickly. We diagnose the issue efficiently and provide honest, upfront solutions to get your system running again as soon as possible.
Our trucks are fully stocked with common parts, allowing us to complete most repairs on the spot. We service all major HVAC brands and models, and we don’t believe in quick fixes—we focus on long-term solutions that restore your comfort and give you peace of mind.
Emergency repairs can also help prevent damage to your property. For example, a failed heater in freezing temperatures could lead to frozen pipes, while poor cooling in commercial buildings could affect productivity or equipment. That’s why we take every call seriously and act with urgency.
With over 30 years of experience, Guido’s Service delivers reliable repairs, clear communication, and transparent pricing—even in high-stress situations. When your system fails, we’re here to restore comfort quickly and professionally.
Don’t let an HVAC emergency disrupt your day—call Guido’s Service and get back to comfort fast.
Preventive Maintenance
Your HVAC system works hard year-round to keep your home or business comfortable—and just like any machine, it needs regular care to perform at its best. At Guido’s Service, we offer comprehensive preventive maintenance services designed to extend the life of your equipment, improve efficiency, and help you avoid costly breakdowns.
Our maintenance plans are tailored for both residential and commercial systems and include seasonal check-ups, detailed inspections, cleanings, and performance testing. Whether it’s your furnace in the winter or your air conditioner in the summer, we ensure every component is running safely and efficiently before extreme temperatures hit.
During a typical visit, our technicians check refrigerant levels, clean coils and filters, inspect electrical connections, lubricate moving parts, test thermostat accuracy, and look for signs of wear or potential failure. Catching minor issues early prevents major problems later—and can save you thousands in emergency repairs or premature system replacements.
Preventive maintenance also improves indoor air quality, reduces energy consumption, and ensures more consistent airflow throughout your space. For businesses, it means fewer service interruptions and a more comfortable environment for employees and customers.
With over 30 years of experience, Guido’s Service brings professionalism, reliability, and care to every maintenance visit. Our goal is simple: to keep your system running like new and your space comfortable all year long.
Contact us today to learn more about our preventive maintenance plans and schedule your next tune-up. Your system will thank you—and so will your energy bill.
HVAC Services for Realtors
At our company, we specialize in providing professional HVAC services tailored to the unique needs of real estate professionals. Whether you are preparing a property for sale, managing a new listing, or ensuring a smooth handover to new homeowners, we deliver solutions that enhance comfort, efficiency, and property value. Realtors know that a reliable heating and cooling system is one of the top concerns for buyers, and our team helps you present homes in their best condition.
We offer detailed HVAC inspections and reports that highlight the current state of the system, providing transparency for sellers and confidence for buyers. If repairs or replacements are needed, our technicians respond quickly with cost-effective options, ensuring that deals move forward without unnecessary delays. For new homes or remodels, we provide complete installation of high-quality systems that meet modern efficiency standards and create an attractive selling point.
Our preventative maintenance programs are also ideal for properties on the market, keeping HVAC units running smoothly during showings and inspections. With reliable service, competitive pricing, and a strong focus on presentation, we help realtors close deals faster and with greater peace of mind. When it comes to showcasing a property’s true potential, our HVAC expertise ensures every home is comfortable, efficient, and ready to sell.
Guido's HVAC Services
Advantages
Thermostat Upgrades
Upgrading your thermostat is one of the simplest and most cost-effective ways to improve your HVAC system’s performance, comfort, and energy efficiency. At Guido’s Service, we offer professional thermostat installation and upgrades for homes and businesses across Contra Costa and Alameda counties, helping you take control of your indoor climate like never before.
Older thermostats often lack precision, resulting in inconsistent temperatures and wasted energy. By switching to a modern programmable or smart thermostat, you gain the ability to manage your system more efficiently—whether you’re home, at work, or on the go.
Smart thermostats allow remote access from your phone, tablet, or computer, so you can adjust settings anytime, anywhere. Many models also learn your schedule and preferences over time, automatically optimizing your HVAC usage to maximize comfort and reduce costs.
Our team can help you choose the right thermostat based on your system type, lifestyle, and budget. We handle installation, setup, and walkthroughs so you understand exactly how to use your new device. For businesses, we also offer solutions that integrate with building automation systems to regulate multiple zones and reduce operational expenses.
Thermostat upgrades can also extend the life of your HVAC system by reducing overuse and avoiding temperature swings that strain equipment.
If your thermostat is outdated, inaccurate, or difficult to program, it’s time for an upgrade. Contact Guido’s Service today and enjoy smarter, more efficient climate control—all at your fingertips.
Seasonal System Inspections
Your HVAC system faces different demands throughout the year—and the best way to keep it running efficiently is through regular seasonal inspections. At Guido’s Service, we offer detailed system checkups before the start of summer and winter to ensure your heating and cooling equipment is ready to perform when you need it most.
Seasonal inspections are a proactive way to catch small issues before they become major problems. Our experienced technicians thoroughly inspect your system, including the thermostat, electrical components, refrigerant levels, filters, blower motors, and safety controls. We also clean essential parts, tighten connections, and check for wear and tear that could lead to breakdowns under heavy usage.
By identifying problems early, we help prevent unexpected failures during extreme temperatures—when your system is working the hardest and service calls are in high demand. These inspections also help you maintain energy efficiency, reduce utility bills, and extend the life of your HVAC equipment.
For homeowners, it means peace of mind and comfort throughout the season. For business owners, it means avoiding costly interruptions and creating a consistently comfortable environment for employees and customers.
At Guido’s Service, we recommend scheduling system inspections twice a year—once in the spring before cooling season and once in the fall before heating season.
Don’t wait for problems to arise. Contact us today to book your seasonal inspection and ensure your system is ready to handle whatever the weather brings. Reliable comfort starts with regular care.
Air Duct Cleaning
Clean air ducts are essential to maintaining healthy indoor air quality and keeping your HVAC system running efficiently. At Guido’s Service, we offer professional air duct cleaning for homes and businesses in Contra Costa and Alameda counties, helping you breathe cleaner air and protect your investment.
Over time, dust, pollen, pet dander, mold spores, and other contaminants accumulate in your ductwork. Each time your system runs, these particles can circulate through your home or workspace—triggering allergies, respiratory issues, and reducing overall air quality. Dirty ducts can also restrict airflow, forcing your HVAC system to work harder and increasing energy consumption.
Our thorough cleaning process begins with a full inspection of your duct system. Using specialized tools and high-powered vacuums, we remove built-up debris, sanitize ducts as needed, and ensure your ventilation is clear and unobstructed. We also inspect for signs of leaks, mold, or rodent activity that may be compromising your system.
Regular duct cleaning not only improves the air you breathe—it also extends the life of your HVAC equipment by reducing stress on fans, filters, and other components. For commercial spaces, it creates a healthier environment for employees and customers, while meeting building health standards.
At Guido’s Service, we recommend duct cleaning every 3 to 5 years, or sooner if you’ve had recent renovations, pets, or allergy concerns.
Breathe easier with professional air duct cleaning you can trust. Contact us today to schedule an inspection and restore freshness to your indoor environment.
Indoor Air Quality
The quality of the air you breathe indoors has a direct impact on your health, comfort, and overall well-being. At Guido’s Service, we provide expert indoor air quality (IAQ) solutions for both residential and commercial spaces throughout Contra Costa and Alameda counties—because clean air isn’t a luxury, it’s a necessity.
Many homes and businesses unknowingly suffer from poor air quality due to dust, allergens, pet dander, mold spores, volatile organic compounds (VOCs), and bacteria circulating through the HVAC system. Symptoms like headaches, fatigue, coughing, or allergy flare-ups can often be traced back to airborne contaminants that build up over time.
Our IAQ services include the installation of advanced air filtration systems, whole-house air purifiers, UV light sanitation, humidifiers, dehumidifiers, and ventilation upgrades. We assess your environment, listen to your concerns, and recommend customized solutions based on your space, health needs, and existing HVAC setup.
Improving indoor air quality not only enhances comfort—it also helps protect your HVAC system from unnecessary wear and tear. Cleaner air reduces dust buildup in filters and ductwork, increases energy efficiency, and helps your system run more smoothly and quietly.
Whether you’re dealing with allergy sensitivities, musty odors, excess humidity, or simply want to create a healthier environment, Guido’s Service has the tools and expertise to help.
Let us improve the air you breathe. Contact us today to schedule an indoor air quality evaluation and discover how we can transform your space into a cleaner, healthier place to live or work.
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We're Here to Help
Have a question or need HVAC service? Whether you’re looking for a new installation, routine maintenance, or urgent repairs, our team at Guido’s Service is ready to assist you. We proudly serve Contra Costa and Alameda counties with fast, friendly, and professional support.
Give us a call, send us a message, or request a free estimate—we’ll get back to you as soon as possible. Your comfort is just one call away.
- (925) 594-3545
- guidoshvacservices@gmail.com
- Mon. - Sat. : 8:00AM - 6:00PM