Choosing pumps, heaters, and equipment for the pools you run
How to spec pumps, filters, and heaters for reliability and margin, and when a replacement beats another band-aid repair on an aging system.
Heiko Ruth · PexelsEquipment is where a pool route stops being a chore chart and starts being a business. Anyone can pour chlorine, but the tech who can spec a pump, size a heater, and talk a customer through a smart replacement is the one building real revenue. The trick is choosing gear that stays reliable across a whole route, because every callback on a bad install is unpaid time you never get back.
Pumps and filters: size for the job, standardize for yourself
A pump has to move the pool’s volume through the filter in a reasonable turnover without fighting the plumbing. Oversizing wastes energy and stresses the system, undersizing leaves the water hazy no matter how clean your chemistry is. Match the flow to the pool and the pipe, not to whatever box is on the shelf.
Variable-speed pumps are worth pushing on most residential accounts now. They run quieter, sip power at low speed, and in many areas efficiency rules have already made single-speed the harder pump to sell. On filters, the cartridge-versus-sand-versus-DE call comes down to the customer’s tolerance for maintenance and your service model. Whatever you choose, standardize on one or two brands across your route so you carry fewer parts and know the gear cold.
Heaters: match the fuel and the expectation
Gas heaters heat fast and suit customers who want the pool warm on demand. Heat pumps cost more up front and warm slowly, but they run cheap and shine in mild climates where the season is long. Set the expectation honestly, because a customer who wanted instant heat and got a heat pump will call you angry every cold morning. Size the unit to the pool’s surface area and the temperature rise they actually want, not the biggest model you can upsell.
Repair or replace
Aging equipment is a judgment call you make on every route. A motor or a heater that has already eaten two repairs in a season is telling you something, and a third fix is usually money the customer would rather put toward a unit that will not strand them. Lay out the honest math: what the repair costs, what a replacement costs, and how long each is likely to last. Customers respect the straight version, and the replacement is where your margin and their reliability both win.
For financing those replacements and the brands worth standardizing on, browse our directory. For pricing the labor around installs, see the route pricing guide.
This guide is general information for pool service company owners, not legal or financial advice. Some outbound links may be affiliate or sponsored links, which are disclosed and never affect our recommendations.
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