What it delivers
The GE PM77X001 Expansion Tank is a water heater part.
Match the part to the exact heater model and its manual before ordering.
Tank volume, per the listing: 2.1 gal.
Remote controllers and Wi-Fi modules work only with the heater series their maker lists.
Listed details: connections: 3/4" mnpt; material: Carbon Steel; model: PM77X001; warranty: 1 year manufacturer.
The listing gives dimensions of 8.46 in (W) x 13.39 in (H) and expansion tank in the box.
Warranty, per the listing: 1 year manufacturer.
Right unit for this house?
Install it when
- Installing or servicing a tankless heater
- Matching a part named in the manual
Look at another unit when
- Heaters it doesn't name
Strengths and trade-offs
Strengths
- Water heater part
Trade-offs
- Confirm the part number first
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | PM77X001 | Retailer |
|---|---|---|
| Tank | 2.1 gal | Retailer |
| Dimensions (seller) | 8.46"W x 13.39"H | Retailer |
| Material | Carbon Steel | Retailer |
| Warranty | 1 year manufacturer | Retailer |
| Connections | 3/4" mnpt | Retailer |
Rival units at this flow
More venting and install parts rated for similar demand
Final verdict
A well-specified water heater part for installing or servicing a tankless heater.
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