HVAC Maintenance Services in Dover, New Hampshire



Maximizing System Efficiency Through Expert Maintenance

When it comes to the year-round comfort of your home or business, nothing is more important than a well-maintained HVAC system. Seasonal shifts in Strafford County bring cold winters, humid summers, and everything in between. Without proper maintenance, these systems struggle, leading to higher energy bills, frequent breakdowns, and inconsistent performance. At HVAC Plus, we specialize in professional HVAC maintenance services designed to keep your heating and cooling systems operating at peak efficiency.


With 20 years of industry experience, our team has a deep understanding of the unique climate demands of Dover, New Hampshire, and nearby areas, including South Berwick, Somersworth, Eliot, Berwick, Durham, Newmarket, and Lee. Preventative maintenance is not just about checking filters or cleaning ducts—it’s about safeguarding your investment, ensuring comfort, and prolonging the lifespan of your system. Routine inspections and tune-ups allow us to identify potential problems early, helping you avoid costly repairs during the harshest months of the year.


Our local expertise also means we tailor every service to the needs of homes and businesses in Dover. Whether preparing for freezing New England winters or ensuring reliable cooling during humid summers, our maintenance services give you peace of mind. We focus on efficiency, air quality, and system longevity so you can enjoy uninterrupted comfort throughout every season. Choosing expert HVAC maintenance is an investment in your home’s comfort, your family’s health, and your financial savings.


Our HVAC Maintenance Services

Seasonal System Tune-Ups

We provide comprehensive tune-ups to prepare your system for the upcoming season. Our technicians inspect and adjust all critical components to ensure optimal performance and prevent unexpected failures. Regular seasonal tune-ups help us maintain efficiency, reduce energy costs, and extend the life of your equipment.

Filter Replacement and Cleaning

Clogged filters restrict airflow and increase energy use. We replace or clean filters to maintain optimal indoor air quality and system efficiency. Our team ensures filters are properly installed and functioning, reducing wear on the system and helping the environment by promoting cleaner, healthier air.

Ductwork Inspection and Cleaning

Dust, debris, and allergens can accumulate in ductwork, reducing airflow and indoor air quality. We thoroughly inspect and clean ducts, ensuring efficient air distribution throughout the space. Our services prevent buildup that could compromise performance and support a healthier, more comfortable indoor environment.

Thermostat Calibration

An improperly calibrated thermostat can cause uneven temperatures and increased energy bills. We test, adjust, and calibrate thermostats to ensure accurate readings and precise control of your system. Proper calibration enables us to optimize comfort, enhance efficiency, and minimize unnecessary energy consumption.

System Performance Testing

We test airflow, refrigerant levels, electrical components, and overall heating and cooling efficiency to verify the system operates as intended. Our performance testing helps detect issues early, allowing us to provide timely solutions that maintain consistent comfort and prevent costly repairs in the future.

Preventative Component Checks

From belts and motors to electrical connections and safety controls, we inspect all components for wear and tear. Our preventative approach helps identify potential problems before they escalate, ensuring the system runs safely, efficiently, and reliably, reducing the likelihood of unexpected downtime.


Benefits of Professional HVAC Maintenance

Improved Energy Efficiency

Regular maintenance reduces the strain on the system, allowing it to operate with less energy. Properly cleaned and calibrated components work more efficiently, minimizing wasted power. Optimized systems not only save on energy costs but also contribute to a more sustainable, eco-friendly home or business.

Extended Equipment Lifespan

Routine inspections and tune-ups help prevent major breakdowns. Identifying and addressing minor issues early keeps components from wearing out prematurely. Well-maintained systems continue to perform reliably for years, delaying costly replacements and protecting the investment made in heating and cooling equipment.

Enhanced Indoor Air Quality

Dust, pollen, and allergens can accumulate within the system, reducing air quality. Cleaning filters, coils, and ducts removes contaminants that can circulate indoors. Improved airflow and reduced airborne particles create a healthier environment and support respiratory wellness for occupants.

Reduced Risk of Breakdowns

Unexpected failures often occur during peak demand periods, creating discomfort and disruption. Preventative maintenance identifies weak points before they escalate into major problems. Reliable operation minimizes downtime, reduces emergency repair costs, and provides peace of mind in all seasons.

Consistent Comfort Levels

Well-maintained systems regulate temperature and humidity more accurately and evenly. Properly functioning components prevent hot or cold spots and ensure uniform comfort throughout the space. Maintaining stable indoor conditions improves overall satisfaction and supports a productive, comfortable environment.

Cost Savings on Repairs

Addressing small issues before they escalate prevents expensive, extensive repairs. Regular maintenance ensures the system operates efficiently, minimizing wear and tear on critical components. Long-term savings are realized through fewer service calls and lower energy consumption while maintaining consistent system performance.

Precision Inspections and Tune-Ups for Long-Term Reliability

Dover’s changing seasons demand reliable heating and cooling systems, and preventative maintenance is the key to ensuring that reliability. For two decades, homeowners and businesses across Dover, New Hampshire, and surrounding areas, including Barrington, Rochester, North Berwick, Kittery, Portsmouth, York, Stratham, and Lebanon, have trusted HVAC Plus’s skilled technicians to keep their systems running at peak performance. By investing in regular HVAC maintenance, you protect your comfort, reduce long-term costs, and ensure your equipment operates efficiently throughout every season. By choosing a trusted local provider with 20 years of experience, we give you peace of mind knowing your HVAC system is in capable hands. Reliable, energy-efficient, and well-maintained systems are not just conveniences—they are necessities for comfort in Dover’s climate.

FREQUENTLY ASKED QUESTIONS

  • How often should HVAC maintenance be scheduled?

    Most systems benefit from maintenance at least twice a year—once before summer and once before winter. Regular scheduling ensures the system remains reliable and efficient. Preventative visits also allow technicians to identify potential problems early, reducing costly repairs and maintaining consistent performance.

  • Does maintenance reduce energy bills?

    Yes. Regular tune-ups improve system efficiency, allowing HVAC units to use less energy. Well-maintained systems operate smoothly, reducing wasted energy and lowering utility costs. Over time, energy savings compound while enhancing overall comfort and system reliability.

  • What happens if I skip maintenance for a year?

    Skipping maintenance increases the risk of breakdowns and higher energy costs. Systems may experience premature wear, decreased efficiency, and reduced performance. Ignoring preventative care often leads to expensive emergency repairs and unnecessary stress for occupants.

  • Is professional maintenance necessary if I change filters regularly?

    While changing filters is essential, professional maintenance addresses deeper issues such as duct inspections, electrical checks, and system calibration. These steps prevent hidden problems from escalating, ensure safety, and maximize the system’s lifespan and efficiency.

  • How long does a maintenance visit take?

    A typical maintenance visit takes 60–90 minutes, depending on system type and condition. Technicians complete thorough inspections, cleaning, testing, and performance checks. This ensures all components function properly and any potential issues are addressed before they impact comfort or efficiency.

  • Can maintenance improve indoor air quality?

    Yes. By cleaning ducts, replacing filters, and inspecting ventilation, professional HVAC maintenance helps reduce allergens, dust, and pollutants. Improved airflow promotes a healthier environment, allowing occupants to breathe more easily while maintaining consistent, comfortable indoor conditions.

  • Will maintenance extend the lifespan of my HVAC system?

    Absolutely. Preventative maintenance reduces strain on key components, prevents wear, and addresses small issues before they escalate. Consistent upkeep allows the system to perform at its best for longer, delaying the need for costly replacements.

  • Do businesses also need HVAC maintenance?

    Yes. Commercial properties require regular maintenance to ensure comfort for employees, clients, and customers. Well-maintained systems minimize downtime, improve efficiency, and protect equipment investments, allowing businesses to operate smoothly and avoid unexpected disruptions.

HAPPY CUSTOMERS!

What our customers say


Five black stars in a row, representing a perfect rating.

I am very happy with the Steve’s work. He is very knowledgeable and willing to share his experience with his customers. I would highly recommend him to anyone that needs HVAC work.

Hristo Y.

Five black stars in a row.

Steve takes his job seriously and professionally. He is honest and thorough with attention to detail and time. I would 100% recommend his services and will be using him as long as he's available!

Madeline R.

Five black stars in a row.

Steve is a true professional and it was great to work with him. He re-piped, connected and tested our propane to our range as well as our grill and it all works perfectly.

I highly recommend his services.

Gregg S.

Five black stars in a row.

We were so grateful Steve came to the rescue this morning when our furnace went down. Extremely responsive, prompt, honest and reliable. We will certainly be calling him for any of our future HVAC needs and highly recommend his company!

Mimi K.

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