Spa circulation pump replacement
Your circulation pump runs 24/7, feeding water to the heater. When a Laing, Grundfos or Gecko circ pump fails, you get lukewarm water and FLO, HL or OH codes. We replace it, flat-rate and same-day.
from $389 · $69 diagnostic credited to your repair
The little pump that feeds the heater
A circulation pump (or circ pump) is the small, quiet pump that runs nearly all the time, moving a steady low-flow stream through the filter and past the heater. Many modern spas use one so the big jet pumps don't have to cycle just to hold temperature. Common circ pumps include the Laing E10 and Laing Infinity, Grundfos units, and Gecko CMHP / CMXP pumps.
Because the circ pump is what delivers water to the heater, its health and your heat are tied together. When a circ pump weakens or dies, the heater can no longer prove the flow it needs to fire safely — so the board locks it out or the tube overheats. That's why a failing circ pump shows up as lukewarm water or a tub that won't reach set temperature, alongside FLO, HL/HFL or OH codes.
Most spa circ pumps are sealed wet-end designs, so when the motor or seal fails the fix is a full pump replacement rather than a rebuild. We match the flow rate, voltage and fittings to your tub and confirm the diagnosis — circ pump versus heater versus flow switch — before quoting.
The faults we see most
Lukewarm water
A weak circ pump can't move enough water past the heater to hold set temp.
FLO / HL / OH codes
Too little flow trips flow, high-limit and overheat faults that lock the heater out.
Hums but won't run
A seized bearing or failed winding leaves the pump buzzing without circulating.
Leaking at the seal
A weeping wet end on a sealed circ pump usually means a full replacement.
A heater problem that's really a pump problem
Owners often assume lukewarm water or a flow code means the heater is bad. Just as often, the heater is fine and the circ pump simply isn't pushing the flow the heater needs to run. Replacing a perfectly good heater won't fix that — the new heater will throw the same code.
That's why we measure actual flow and test both the pump and the heater at the diagnostic. If the circ pump is the cause, a correctly sized replacement restores flow, clears the code and brings the heat back — and the $69 diagnostic comes off the repair.
Circulation pump or wet-end repair
Most sealed circ pumps are a full replacement; some take a wet-end repair. Confirmed at your $69 diagnostic, credited to the repair.
What's your spa doing?
Answers before you call
It runs nearly continuously at low flow to move water through the filter and past the heater, so the tub holds temperature without the big jet pumps cycling. It's what delivers the flow the heater needs to fire.
Either can cause it, which is why we measure flow and test both. A weak circ pump can't push enough water past a good heater to hold set temp, and it throws the same FLO or OH codes a heater fault would.
Most spa circ pumps are sealed wet-end units, so a failed motor or seal usually means a full replacement from $389. A few designs take a wet-end repair — we confirm which at the diagnostic.
Usually yes. We carry the common Laing, Grundfos and Gecko circ pumps and finish most replacements the same day across Palm Beach County.
Lukewarm or flowing FLO? We'll fix it today.
Flat-rate from $389. $69 diagnostic credited 100% to your repair.
Tell us what's wrong — we'll call you back within the hour
No spam, no call center. Just a local tech who knows hot tubs and tells you the price before the work.
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We'll call you back within the hour. Hot tub out cold right now? Call us at (561) 555-0143.