Pool Heaters

Extending Your Swim Season With a Reliable Pool Heater

A swimming pool represents a significant investment in your property and your family’s enjoyment, yet in a Michigan climate that investment often sits unused for much of the year. Without a dependable pool heater, comfortable swimming is limited to a handful of truly warm weeks each summer. Water that feels bracing in early June or late August keeps people out of the pool exactly when they most want to use it. A properly sized and installed heater changes that equation entirely, giving you control over water temperature from spring through fall.

At Thompson Plumbing, Heating & A/C Inc., we bring the same technical discipline to pool heating that we apply to home comfort systems throughout the region. Heating a large volume of water efficiently requires an understanding of thermodynamics, hydraulics, and fuel systems—the very disciplines our factory-trained technicians work with every day. When you approach pool heating as a serious mechanical project rather than an afterthought, you get consistent results and lower operating costs over the life of the equipment.

Types of Pool Heaters and How They Work

Pool heaters generally fall into three broad categories, and each one suits a different set of priorities. Understanding the operating principle behind each helps you make a decision that fits your usage patterns and budget. The right choice depends on how often you swim, how quickly you want the water to warm, and what fuel sources are already available at your property.

• Gas heaters: These units burn natural gas or propane to heat water passing through a copper coil, delivering rapid temperature increases regardless of outdoor air conditions. They are ideal for pools used intermittently, since they can bring water up to temperature quickly before a weekend gathering.
• Heat pumps: These draw warmth from the surrounding air and transfer it to the pool water using a refrigeration cycle. They cost less to operate than gas units but work best when the outdoor temperature stays above roughly 50 degrees, making them well suited to steady seasonal use.
• Solar heating systems: These circulate pool water through roof-mounted or ground-mounted collectors that absorb heat from sunlight. Operating costs are minimal, though performance depends heavily on available sunshine and system size.

Each system carries its own technical specifications that affect performance. Gas heaters are rated by British thermal units, or BTUs, with common residential models ranging from 100,000 to over 400,000 BTUs. Heat pumps are measured by their coefficient of performance, which describes how many units of heat they deliver for each unit of electricity consumed. When we evaluate your pool, we calculate the surface area, average wind exposure, and desired temperature rise to recommend equipment that matches your specific situation rather than a generic estimate.

Hayward Pool Heater Installation, Warranty & Repair Services

Thompson Plumbing, Heating & A/C Inc. provides professional pool heater installation and service to help keep your pool comfortable throughout the season. We install reliable Hayward Pool Products pool heaters and can help you select the right system for your pool’s size and heating needs. Our team also provides Hayward pool heater warranty service to help address covered equipment concerns and keep your system operating properly. In addition to Hayward products, we service pool heaters from all major brands, providing expert repairs, maintenance, troubleshooting, and support to keep your pool heater running efficiently.

Our Installation and Sizing Process

Proper sizing stands as the single most important factor in a pool heater that performs well and lasts. An undersized unit runs constantly and struggles to reach target temperatures, while an oversized unit cycles frequently and wastes fuel. Our approach begins with a careful assessment of your pool and property before any equipment is selected.

1. Site evaluation: We measure the pool surface area, review the existing plumbing and filtration setup, and identify available gas lines or electrical capacity to determine which heater types are practical.
2. Load calculation: We factor in the temperature rise you want, prevailing wind conditions, and whether a pool cover will be used, then calculate the heating capacity required to maintain comfort.
3. Equipment selection and installation: We install the chosen unit with correct gas piping, electrical connections, and plumbing tie-ins, then test every component and verify safe, efficient operation before we consider the job finished.

Installation touches on plumbing, gas fitting, and electrical work all at once, which is precisely why a company grounded in these trades handles the project so effectively. Gas line sizing must account for the demand of the heater alongside any other appliances on the same supply. Bonding and grounding must meet electrical code to keep the system safe around water. The plumbing connections must maintain proper flow rates so the heat exchanger operates within its designed parameters. We coordinate all of these elements so the finished system runs the way the manufacturer intended.

Maintenance, Repair, and Long-Term Performance

A pool heater represents mechanical equipment that benefits from routine attention. Left unmaintained, heaters develop scale buildup inside the heat exchanger, corrosion from unbalanced water chemistry, and airflow restrictions that reduce efficiency. Water that runs too acidic or too alkaline accelerates wear on the copper components inside gas units. Regular service catches these problems before they turn into expensive failures.

Common issues we diagnose and correct include ignition failures on gas units, refrigerant concerns on heat pumps, restricted water flow from dirty filters, and thermostat or control board malfunctions. When a heater fails to fire or delivers water cooler than expected, the cause is often traceable to a specific component that our technicians can identify and repair. We service the equipment we install and stand behind that work, drawing on the same factory training that supports our heating and cooling services across the area.

Seasonal preparation matters a great deal in this climate. Before winter, pool heaters need proper draining and protection to prevent freeze damage to internal components. In spring, a startup inspection confirms that everything survived the cold months and operates safely before the season begins. Building these steps into your routine extends equipment life considerably and protects your investment year after year.

Thompson Plumbing, Heating & A/C Inc. is a family owned and operated business with deep roots in the community. Dale Thompson Sr. purchased the business in 1964 from Dave Roach, and the company originally operated out of what is now My Papa’s Restaurant before moving to its present location in the late 1960s. Three generations of the Thompson family are involved in the business today, and all of our employees are factory trained and highly qualified. We are proud to be Monroe County’s only Bryant Factory Authorized Dealer, and we serve pool owners and homeowners throughout Petersburg, Dundee, Ida, Britton, Ottawa Lake, Lambertville, Maybee, Milan, Temperance, Tecumseh, Monroe, and Erie, MI. When you want to extend your swimming season with equipment that is sized correctly, installed to code, and maintained by people who understand the trade, we are ready to help.