Name: Bosch Tronic 6100 C 27
Brand: Bosch
Price: 636.60 USD

For a two bathroom home in a warm climate that wants a compact whole home heater with a 2 year parts warranty, double what Rheem gives.

Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.

Pros

Cons

The Bosch Tronic 6100 C family

Every Bosch Tronic 6100 C model we rank, smallest first. Ratings compare each against its own fuel.

Model	Heating power	Rating	Price
Bosch Tronic 6100 C 18	18 kW	2.6/5	$585.46
Bosch Tronic 6100 C 27 (this one)	27 kW	3.1/5	$636.60

How it scores

The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its fuel. How we rank explains each one.

For a faucet far from the main water heater. A lifetime warranty at a low price makes it a safe point of use pick if you hire the install out.

$219

For a small home or apartment in a warm climate with 125 A service. The Tempra 24 costs little more and gives more headroom.

$544.43

For adding fast hot water to a far sink or a single shower in a warm climate. The long warranty sets it apart from cheaper point of use units.

$266.14