Dimensions in inches?

The Bosch Tronic 6000C WH27 is 12.5 H x 15.25 W x 4.5 D. Globaltowne is an Authorized Bosch Distributor.

I am replacing a powerstar bosch ae115. is the 17.2kw of this make/model, which is shown as a replacement for the ae115, easily swapped out?

Yes, the WH17 is the current model that replaces the older AE115 model. The pipe connections are very slightly moved, but electrical requirements and pipe connection diameters are the same. Easy swap.

can hot water go in cold feed side. my house heater heats my water but runs out after a minute

No, The Bosch Tronic 6000C WH27 is a whole house electric tankless and you would not need to feed it preheated water. If you want to do that then you would want to go with one of the mini tank heaters like the Bosch Tronic 3000T ES4. Globaltowne is an Authorized Bosch Distributor.

how many gallons is this?

It's not gallons doesn't hold water it heats it as it flows

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Description

🔥 Heat smarter, live better with Bosch ⚡

SPACE SMART SLEEK - Compact wall-mount unit frees up valuable space—perfect for modern homes and offices.
ENERGY SAVVY PERFORMANCE - 97% thermal efficiency minimizes energy waste and slashes utility bills.
PRECISION TEMPERATURE CONTROL - External knob and flow sensor ensure consistent, comfortable water temperature every time.
INSTANT HOT WATER ALWAYS READY - Tankless design delivers endless hot water on demand—no waiting, no limits.
VERSATILE INSTALLATION ANYWHERE - Fits virtually anywhere indoors or outdoors—commercial or residential, your choice.

The Bosch Electric Tankless Water Heater (17.3 kW) is a compact, wall-mountable unit designed for whole-house hot water on demand. With 97% thermal efficiency and advanced temperature controls, it delivers consistent, energy-saving performance while saving space. Ideal for both residential and commercial use, it requires minimal installation footprint and supports flexible placement options.

Specifications

Brand	Bosch Thermotechnology
Color	White
Wattage	17.3 KW
Voltage	208 Volts
Maximum Flow Rate	0.6 Gallons Per Minute
Heat Output	17.3 Kilowatts
Efficiency	97%
Maximum Operating Pressure	150 Pound per Square Inch
Mounting Type	Wall
Is Electric	Yes
Manufacturer	Bosch Thermotechnology Corporation
UPC	052575030500
Global Trade Identification Number	00052575030500
Part Number	7736503050
Item Weight	18.7 pounds
Product Dimensions	15.5 x 4.5 x 12.5 inches
Item model number	WH17 Tronic 6000 C
Is Discontinued By Manufacturer	No
Size	17.3 kW
Item Package Quantity	1
Included Components	water heater
Batteries Included?	No
Batteries Required?	No
Warranty Description	5 year heating module /2 year parts

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