HVAC Services in Dover, New Hampshire



Comprehensive HVAC Solutions for Long-Term Performance

For over two decades, residents and businesses have relied on professional HVAC services to maintain year-round comfort. With New England’s weather bringing frigid winters, humid summers, and unpredictable temperature swings, having a dependable HVAC system is not just a convenience—it’s a necessity. HVAC Plus brings 20 years of expertise to every project, delivering tailored heating, cooling, and ventilation solutions designed specifically for the homes and businesses of Dover, New Hampshire, and nearby areas, including South Berwick, Somersworth, Eliot, Berwick, Durham, Newmarket, and Lee.


Our commitment is rooted in local knowledge and technical skill. We understand the unique challenges posed by Dover’s seasonal climate and provide energy-efficient systems that improve indoor air quality, maximize comfort, and reduce utility costs. Whether you live in a historic Dover home near the Cocheco River, manage a growing business along Central Avenue, or own a property in nearby communities such as Durham or Somersworth, we have the tools and knowledge to keep your environment comfortable all year.


At HVAC Plus, we don’t just install or repair systems—we deliver peace of mind. From precise HVAC maintenance to full-scale installations, our team approaches every job with professionalism and attention to detail. Over 20 years of serving New Hampshire homeowners has built our reputation for reliable service, transparent practices, and long-term results. If you’re seeking trusted HVAC services in Dover backed by deep local experience, our team is here to ensure your property remains comfortable in every season.


Benefits of Professional HVAC Services

Year-Round Comfort

Professional HVAC services ensure a property maintains ideal temperatures throughout all seasons. From cold winters to hot, humid summers, properly maintained systems provide consistent warmth and cooling. Consistent comfort also reduces stress on the HVAC unit, preventing uneven temperature distribution and enhancing overall living and working conditions.

Improved Energy Efficiency

Energy-efficient systems lower utility costs while maintaining optimal performance. Regular servicing ensures components operate at peak efficiency, reducing energy waste and unnecessary strain on the system. Over time, improved efficiency leads to significant savings and a smaller environmental footprint, supporting sustainable energy practices.

Better Indoor Air Quality

Regular HVAC maintenance removes dust, allergens, and pollutants that accumulate in air ducts and filters. Cleaner air improves health and reduces allergy or asthma symptoms. Enhanced air circulation also prevents mold growth and maintains a fresher, more comfortable indoor environment for both residential and commercial spaces.

Extended System Lifespan

Routine inspections and servicing address minor issues before they become major problems, helping equipment run smoothly for a longer period. Regular lubrication, filter changes, and component checks reduce wear and tear, ensuring the system maintains reliable performance. Longer lifespans mean lower replacement costs over time.

Reduced Emergency Repairs

Preventative care minimizes the risk of sudden system failures. Early detection of potential issues prevents costly and disruptive emergency repairs. Scheduled maintenance ensures uninterrupted comfort, reduces downtime, and eliminates the stress and expense of urgent, last-minute service calls.

Increased Property Value

Modern, well-maintained HVAC systems add value to residential and commercial properties. Efficient systems signal reliability and quality to potential buyers or tenants. Beyond financial benefits, functional HVAC equipment enhances comfort, energy efficiency, and the overall appeal of the property, making it more marketable.


Our HVAC Services

HVAC System Installations

We provide expert installation of new heating, cooling, and ventilation systems. Each installation is tailored to the property’s size, energy requirements, and budget, ensuring optimal long-term performance and efficiency. Our team guides clients through system selection, proper sizing, and setup to maximize comfort and energy savings.

HVAC Repairs

Our technicians are trained to diagnose and repair all types of HVAC problems. From faulty thermostats to compressor failures, we deliver fast, effective repair services that restore comfort without unnecessary delays. We also provide ongoing support and advice to prevent future issues and maintain system reliability.

Preventative Maintenance

We perform routine inspections and tune-ups to reduce wear and tear on HVAC systems. Our maintenance services are designed to prevent costly breakdowns while optimizing performance. By partnering with us for scheduled care, clients enjoy improved efficiency, lower energy bills, and longer equipment lifespan.

Boiler Services

We specialize in boiler installation, maintenance, and repair, keeping heating systems safe and reliable. Our team ensures boilers operate efficiently and meet safety standards. Regular inspections with us help prevent breakdowns, extend system life, and maintain consistent, comfortable indoor temperatures.

Air Handler & Ductwork Solutions

Proper airflow is critical for HVAC efficiency, and we ensure it through expert air handler and ductwork services. We inspect, clean, and repair ducts, seal leaks, and optimize distribution for consistent comfort. Working with us ensures improved energy efficiency and quieter, more effective system operation.

Indoor Air Quality Services

We offer advanced solutions to enhance indoor air quality, including air purifiers, filters, and humidification systems. Our team helps reduce allergens, dust, and contaminants while maintaining healthy humidity levels. By relying on our expertise, clients experience cleaner, fresher air and a safer living or working environment.

Sustainable and Energy-Efficient HVAC Solutions

For over 20 years, Dover residents and businesses have counted on skilled HVAC contractors to deliver reliable heating, cooling, and air quality solutions. At HVAC Plus, we bring proven expertise, advanced equipment, and a deep understanding of the climate of Dover, New Hampshire, and surrounding areas, including Barrington, Rochester, North Berwick, Kittery, Portsmouth, York, Stratham, and Lebanon, to every project. From system installations to preventative maintenance, our services are designed to keep your property operating at peak efficiency throughout the year. Whether you’re upgrading an outdated unit, seeking seasonal maintenance, or dealing with an unexpected breakdown, our team is dedicated to providing dependable, professional service tailored to local needs. Trust our expertise to keep your home or business comfortable in every season.

FREQUENTLY ASKED QUESTIONS

  • How often should HVAC systems be serviced?

    HVAC systems should be serviced at least twice a year—once before summer and once before winter. Seasonal tune-ups help prevent breakdowns, extend system lifespan, and ensure peak performance. Regular service also identifies minor issues early, saving on costly repairs and improving energy efficiency.

  • What size HVAC system is right for my home?

    The correct system size depends on square footage, insulation, and layout. A professional evaluation ensures the HVAC system is neither oversized nor undersized, maximizing efficiency and comfort. Proper sizing also reduces wear and tear, extends equipment life, and lowers utility costs.

  • Can HVAC services lower my energy bills?

    Yes. Professional maintenance and installation of energy-efficient systems can significantly reduce energy costs. Optimized systems prevent wasted energy, improve performance, and minimize environmental impact. Regular service also helps identify inefficiencies that may otherwise increase monthly utility expenses.

  • Do you service both residential and commercial HVAC systems?

    Yes. Comprehensive HVAC services are available for both homes and commercial properties. Each project is tailored to specific needs, ensuring proper installation, maintenance, or repair. Service also includes recommendations for system upgrades and energy-saving improvements where needed.

  • How long does an HVAC installation typically take?

    Most installations are completed within one to two days, depending on system type and property requirements. Technicians work efficiently while ensuring precision. The process also includes system testing, calibration, and client guidance on operation for optimal long-term performance.

  • What are the signs I need HVAC repair?

    Common signs include unusual noises, inconsistent airflow, rising utility bills, or uneven temperatures. Other indicators may include frequent cycling, weak airflow, or strange odors. Timely repairs prevent further damage and restore efficient operation quickly.

  • Are modern HVAC systems environmentally friendly?

    Yes. Modern systems use eco-friendly technology that reduces energy use and emissions. High-efficiency models conserve energy, lower costs, and often qualify for incentives or rebates. They also maintain comfortable indoor conditions while reducing environmental impact.

  • Do you offer emergency HVAC services?

    Yes. Prompt emergency HVAC services address heating or cooling failures when immediate attention is needed. Fast response helps restore comfort, prevent damage, and minimize downtime, ensuring uninterrupted operation for homes and businesses.

HAPPY CUSTOMERS!

What our customers say


Five black stars.

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.

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.

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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