Doheny’s 6947 Solar Pool Heating Collector Pool Heat Exchanger Review: 2-Way Diverter Valve for On-Off Switching

The Doheny’s 6947 Collector in Short

Doheny’s 6947 Solar Pool Heating Collector harnesses sun’s rays to warm circulating water before returning to pool for owners of 12′-15′ round pools needing 40,000 BTU of capacity.

Extending the swim season depends on the 5′ W x 20′ L collector area available to absorb sunlight and warm the circulating water. A larger surface area allows for more consistent temperature gains throughout the day compared to smaller, less efficient models.

The Doheny’s 6947 Collector achieves this by providing two 2.5′ W x 20′ L panels to increase the total solar collection area. This specific configuration provides the 40,000 BTU of capacity required to maintain a usable temperature in a 12′-15′ round pool.

We evaluated 51 pool heat exchangers and selected this model for a full review because it has 155 buyer ratings, the 13th most of the 51 screened. We chose the most-rated products that pass screening, at most 2 per brand. This review is for shoppers who want to reduce reliance on gas or electricity for pool heating.

The Short Answer on the Doheny’s 6947 Collector

Best for: you need a solar solution for an aboveground pool and have space to mount a 2.5′ x 20′ collector on a roof or rack.

The Doheny’s 6947 Collector is a practical entry point for solar heating at $159.99.

• Pro: The 40,000 BTU output is specifically sized for 12′-15′ round pools.
• Pro: Included mounting hardware provides 15 stainless steel brackets and screws for secure installation.
• Pro: A 2-way diverter valve allows you to use the system as an on/off switch for the heating circuit.
• Con: The 46-pound weight requires a sturdy mounting surface to support the collector and hardware.
• Con: The kit excludes PVC or flex pipes, requiring you to source your own plumbing connections.

Don’t buy this if: your pool exceeds 15 feet in diameter, as the 40,000 BTU capacity will not provide sufficient heat for larger volumes.

Price assessment: At $159.99 for a 2-panel kit, this represents a low-cost way to begin reducing reliance on gas or electricity.

Key Specifications for the Solar Pool Heat Exchanger

The 40,000 BTU heating capacity measures the total amount of heat energy transferred to the water per unit of time.

Before You Buy: Pool Thermal Exchanger Checklist

The first thing to check is the pool size to ensure the collector provides enough heat for your specific volume.

• Check your pool dimensions—a 12′-15′ round pool requires the 2.5′ x 20′ collector to achieve the 40,000 BTU output needed for effective heating.
• Confirm your plumbing requirements—the kit does not include PVC or flex pipes, so you must purchase your own lines to avoid a stalled installation.
• Verify your mounting surface—the collector requires a roof or rack mounting kit, which is sold separately from the panels.
• Measure your available space—the 5′ W x 20′ L option includes two 2.5′ W x 20′ L panels to ensure you have enough surface area for your needs.
• Budget for specialized hardware—the 15 stainless steel mounting brackets and #14 screws are included, but you must confirm your specific roof type is compatible with these fasteners.
• Assess your water flow—ensure your pump provides enough turnover to prevent improper flow rate, which causes localized overheating and potential melting of plastic solar collectors.

You should not buy this product if you require a plug-and-play system that includes all necessary connecting hoses and plumbing hardware.

What the Numbers Mean in Use

How the 2-Way Diverter Valve bypasses the solar system

The 2-Way Diverter Valve allows you to bypass the solar system completely when it is cloudy by acting as an on/off switch for the heating circuit. By plumbing this valve into the filter or solar heating system, you maintain consistent pool pressure and ensure water only enters the solar loop when you want it to. The Doheny’s 6947 Collector includes this diverter valve and a spacer to facilitate the connection.

Because the 2-Way Diverter Valve is included, you can toggle the flow to avoid the loss of pressure that occurs when water is forced through a solar loop during low-light periods. This specific component means you do not have to rely on manual plumbing adjustments to manage your pool’s circulation. Failing to include a bypass like this can lead to reduced flow rates throughout the rest of your pool’s plumbing system.

Why stainless steel hardware prevents corrosion on the collector

The Doheny’s 6947 Collector includes 15 stainless steel mounting brackets and 15 #14 stainless steel screws to secure the panels to your structure. Using stainless steel prevents the hardware from corroding when exposed to the moisture and chemicals common in pool environments. These specific components allow you to mount the collector kit on either a roof or a plywood structure.

The inclusion of 15 brackets and screws provides the necessary hardware for the 2.5′ W x 20′ L or 5′ W x 20′ L configurations. You can install the panels on a rack or roof using the 5 included 6′ straps to ensure the panels remain stable against wind. Choosing a kit without dedicated mounting hardware often results in the need to purchase separate, non-corrosive fasteners to prevent the panels from shifting over time.

How solar energy conversion reduces reliance on gas or electricity

The Doheny’s 6947 Collector uses solar energy to heat pool water by harnessing the sun’s rays to warm circulating water before it returns to the pool. This process reduces your reliance on gas or electricity to maintain water temperature. The 2.5′ x 20′ collector provides 40,000 BTU of heat for 12′-15′ round pools, which is the amount of heat energy transferred to the water per unit of time.

By using solar energy, you extend your swim season without increasing your monthly utility costs. The 40,000 BTU capacity is what puts a usable temperature in reach for smaller pools while keeping the system efficient. If you select a solar collector with a lower BTU output than your pool’s requirements, you may find the water temperature remains stagnant during peak sunlight hours.

How the Doheny’s 6947 Collector Compares to Alternatives

The Doheny’s 6947 Collector provides a 40,000 BTU output for 12-15 foot round pools, a specific thermal capacity that allows it to heat water for smaller setups without the need for larger, more expensive units.

• The Upgraded Solar Pool Heater matches the $159.99 price point of the Doheny’s 6947 Collector.
• The Sun2Solar XD1 Style Solar Powered Heater is $0.93 more expensive than the Doheny’s 6947 Collector.
• The SunQuest Complete Pool Heater System 4 Panels is $0.99 cheaper than the Doheny’s 6947 Collector.
• The Mxmoonant Pool Heater 5.5KW costs $9.01 more than the Doheny’s 6947 Collector.
• The Goplus 2.5FT x 16.5FT Solar Pool Heater is $16 more expensive than the Doheny’s 6947 Collector.

If you require a system with a higher power rating for a larger pool, the Mxmoonant Pool Heater 5.5KW is the better pick for those seeking higher electrical output.

For a different configuration, you can view our full SunQuest SQ-2220-REG review to see how these panels perform.

Getting the Doheny’s 6947 Collector Working, and What to Check After

Getting the Doheny’s 6947 Collector Running

You must have a functional pool circulation pump to move water through the heating system to ensure consistent temperature before the solar panels can heat the water.

1. Unpack the two 2.5′ W x 20′ L panels and the 15 stainless steel mounting brackets.
2. Secure the 15 #14 stainless steel screws into the brackets to form the mounting frame.
3. Position the collector kit on a roof or rack and tighten the (5) 6′ straps.
4. Connect the 2-Way Diverter Valve to the plumbing lines to act as an on/off switch for the heating circuit.
5. Attach the PVC bonding coupler to join the collector to your pool’s existing plumbing lines.

Warranty and Support: What to Check

Warranty coverage and return policies vary by seller and country.

• Confirm the 2-Way Diverter Valve functions as a sealed switch to prevent water leaks at the junction.
• Verify that the 15 stainless steel mounting brackets are seated correctly to prevent the 46-pound unit from shifting.
• Check that the 2.5′ W x 20′ L collector panels are free of surface abrasions that could block sunlight.

Test the water flow through the diverter valve on the day it arrives to ensure the plumbing connections are leak-free before the return window closes.

What Buyers Still Want to Know About This Pool Heat Exchanger

How do I actually attach this to my roof without it blowing off?

The Doheny’s 6947 Solar Pool Heating Collector Kit includes a roof/rack mounting kit with 15 stainless steel mounting brackets and 15 #14 stainless steel screws to secure the panels. You should confirm the specific roof material and structural integrity with a qualified installer to ensure the 46-pound weight is safely supported during high winds.

Is the Doheny’s 6947 Solar Pool Heating Collector Kit compatible with my pool?

Yes, the Doheny’s 6947 Solar Pool Heating Collector Kit is compatible with aboveground pools. The kit includes a 2-way diverter valve, which acts as an on/off switch for the heating system, allowing you to control the flow of water through the collectors.

How much heat does the Doheny’s 6947 Solar Pool Heating Collector Kit provide?

The Doheny’s 6947 Solar Pool Heating Collector Kit provides 40,000 BTU of heat when used for 12-15 foot round pools. This output helps extend your swim season by using the sun’s rays to warm water before it returns to the pool.

What size panels come in this kit?

The Doheny’s 6947 Solar Pool Heating Collector Kit provides two 2.5′ W x 10′ L panels for a total surface area. If you need a larger footprint, the brand offers other sizes like 5′ W x 20′ L, though those are not included in this specific 2-count package.

Ensuring your equipment meets industry requirements is easy by reviewing the pool heat exchanger safety standards and certifications.

Is the Doheny’s 6947 Collector Right for You?

Who the Doheny’s 6947 Collector suits and the jobs it is the wrong choice for, listed below with the reason for each.

Where to Buy This Pool Thermal Exchanger

When we looked in November 2026, the Doheny’s 6947 Collector was listed at $159.99 – a snapshot that may have changed since.

Pool heat exchangers are sold by the retailers below – we do not track which of them has the Doheny’s 6947 Collector in stock, so check availability and the current price with the retailer before making a trip.

• Lowe’s (online and physical stores) — broad range of pool equipment and local store availability
• PoolSupply.com (online only) — specialist retailer with a deep inventory of heating systems
• Wayfair (online only) — variety of residential pool heating products for home use
• Build.com (online only) — trade-oriented selection of professional pool heating equipment
• Amazon (online only) — wide selection of residential solar and electric pool heating brands
• Home Depot (online and physical stores) — large inventory of pool accessories and in-store pickup options

Final Verdict on the Doheny’s 6947 Collector

The Doheny’s 6947 Collector provides a specific 40,000 BTU heat output for 12-15 foot round pools. This capacity determines the total amount of heat energy transferred to the water per unit of time, which helps extend your swimming season by reducing reliance on gas or electricity. Because the 5′ W x 20′ L model includes two 2.5′ W x 20′ L panels, you get a larger surface area for solar collection than a single-panel setup. How much space do you have available for the array? The kit is designed to be mounted on a roof or a rack using 15 stainless steel mounting brackets and 6′ straps. Since the 2-Way Diverter Valve is included, you can plumb it into your system to act as an on/off switch for the solar heating. It is important to confirm your mounting surface before ordering, as the kit requires a roof or rack and does not include PVC or flex pipes.

You should choose the Doheny’s 6947 Collector if you need a solar solution for a mid-sized round pool and want a kit that includes the necessary mounting hardware. This option is available for around $159.99.

The 3.2 rating from 155 buyer ratings provides a significant sample of user feedback to consider alongside the 40,000 BTU heating capacity.

Skip it if: you require a heating system for a pool larger than 15 feet or if you need a kit that includes the necessary plumbing pipes for installation.