What does this hot water recirculation pump quarterly checklist cover?

14 items across 4 sections, covering leaks and operation, check valve and controls, delivered temperature, records and reporting. Each item spells out what the person walking the job is actually looking for, not just a box to tick.

Who should run this inspection?

The plumbing or building maintenance tech on the quarterly mechanical round.

When in the schedule should this walk happen?

Every quarter, paired with the water heater check since a dead recirc pump shows up first as slow hot water at the far fixtures, not at the heater.

Why do these items ask for a photo?

10 of the 14 items call for photo evidence, 11 photos in all. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.

What most often fails a hot water recirculation pump quarterly inspection?

Pump seized or tripped and nobody notices, because the slow hot water at the far rooms gets blamed on the heater instead of the circulator that stopped moving water. Check valve stuck open, so hot water thermosiphons the wrong way through the loop and the return leg reads cold even with the pump running. Aquastat or timer set so the pump almost never runs, so the return temperature is read once, called fine, and the loop sits cold for most of the day.

Can I use this checklist in RTI?

Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper evident audit trail.

Free checklist

Hot water recirculation pump quarterly maintenance checklist

A quarterly recirculation pump round is short on purpose: it catches the wear items that fail between annual services. This checklist is sized for a tech with a phone. Every item says what to look at and the photo that proves the round happened. Work is commonly verified against IPC / UPC plumbing codes, manufacturer's published instructions. Confirm the edition your authority having jurisdiction has adopted.

Start free with this checklist Download as PDF

The checklist

Every item, and the photo evidence it needs

The photo count on each row is what RTI would require before the item can be submitted. Work the list here and watch the gate hold, or load it into RTI and let it enforce the real thing.

Leaks and operation

Seal, flanges and body checked for leaks
No weeping at the pump seal, isolation flanges or unions, no rust trail or drip under the circulator, motor and body dry.
Pump running and moving water quietly
Circulator energized when the controls call, running without growl, cavitation gurgle or excessive vibration, a temperature rise felt across the pump confirming it is actually moving water rather than dead-heading.
Flow arrow on the pump body pointing toward the heater
Arrow cast or labeled on the body points in the return direction, back toward the heater inlet, so the pump was not fitted backward on a past swap.
Rotor can or motor end checked for the pump type
Wet-rotor cartridge: no weep or scale crust at the rotor can or vent screw. Flanged motor-driven pump: motor mount tight and guard fitted.
Isolation valves either side of the pump found fully open
Both isolation valves fully open with handles in place, not left part-closed after a past service where they throttle the loop.

Check valve and controls

Check valve holding against reverse flow
With the pump off, the return line does not thermosiphon hot the wrong way, and with it on the flow is in the intended direction, no sign of a check stuck open or chattering.
Aquastat, timer and controls set as intended
Aquastat setpoint and any recirculation timer schedule confirmed against the intended settings so the pump maintains the loop through occupied hours rather than sitting idle.
Timer or schedule clock showing the actual time of day
Where a timer or BAS schedule runs the pump, its clock matches the actual time rather than drifting after an outage, so the run window covers occupied hours.
No photo

Delivered temperature

Return temperature verified on the loop
Actual return-line temperature measured near the pump and compared to the setpoint, confirming hot water is being carried back rather than the loop running cold between calls.
Wait and temperature taken at the farthest fixture
Farthest fixture run until the thermometer steadies, wait time and reading compared with the design and last quarter, and not above the site's scald limit.
Balancing valve settings found at their marked positions
Where the loop has balancing valves, memory stops or marked settings found undisturbed, and any valve moved since the balance reported rather than reset by eye.
No photo
Pipe insulation intact on the loop at the pump and heater
Insulation on the supply and return piping around the pump and heater whole, jacketed and dry, no bare runs shedding the heat the loop is meant to carry.

Records and reporting

Return reading compared with the water management plan
Where the owner keeps a legionella water management plan, the return reading checked against its control limit and any low reading reported to the owner the same day.
No photo
Quarterly readings logged to the loop record
Return and far-fixture readings, wait time, control settings and any leak or noise found logged against the pump so the next round reads against them.
No photo

What usually sends this back

The failures are almost always the evidence, not the work

Pump seized or tripped and nobody notices, because the slow hot water at the far rooms gets blamed on the heater instead of the circulator that stopped moving water.
Check valve stuck open, so hot water thermosiphons the wrong way through the loop and the return leg reads cold even with the pump running.
Aquastat or timer set so the pump almost never runs, so the return temperature is read once, called fine, and the loop sits cold for most of the day.

Verified against

IPC / UPC plumbing codes

Common questions

6 answers

What does this hot water recirculation pump quarterly checklist cover?: 14 items across 4 sections, covering leaks and operation, check valve and controls, delivered temperature, records and reporting. Each item spells out what the person walking the job is actually looking for, not just a box to tick.
Who should run this inspection?: The plumbing or building maintenance tech on the quarterly mechanical round.
When in the schedule should this walk happen?: Every quarter, paired with the water heater check since a dead recirc pump shows up first as slow hot water at the far fixtures, not at the heater.
Why do these items ask for a photo?: 10 of the 14 items call for photo evidence, 11 photos in all. A checklist answer without the photo is a claim; the photo is what makes the record worth something in a dispute and lets a reviewer approve work without re-walking the job.
What most often fails a hot water recirculation pump quarterly inspection?: Pump seized or tripped and nobody notices, because the slow hot water at the far rooms gets blamed on the heater instead of the circulator that stopped moving water. Check valve stuck open, so hot water thermosiphons the wrong way through the loop and the return leg reads cold even with the pump running. Aquastat or timer set so the pump almost never runs, so the return temperature is read once, called fine, and the loop sits cold for most of the day.
Can I use this checklist in RTI?: Yes. Start a free RTI workspace, build this list as a checklist, and the Photo Gate holds the submit button until every mandatory item is answered and its photos are attached. Approved inspections roll into a branded turnover package with a tamper evident audit trail.

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Run it with the Photo Gate

A checklist nobody can submit half-finished

Load this list into RTI, stick a QR tag on the area it covers, and the submit button stays locked until every mandatory item is answered and the 11 required photos exist. Approved walks roll into a branded turnover package with a tamper evident record behind every line.