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Italtherm CITY CLASS 35 F 32.4 kW

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A powerful and high-tech gas double-circuit wall-mounted gas boiler with a closed (turbocharged) combustion chamber, a microprocessor control system, an advanced modulating burner and proprietary Intelligent Combustion System technology. It is one of the older models of the Italtherm City Class family. It has a high useful thermal power up to 32.4 kW, demonstrates a decent efficiency. Such heat output is quite enough to organize heating of detached cottages, as well as office, commercial and household premises with a total area of 25 to 259 m². It is an efficient modern and safe solution that can be installed directly in residential areas. In addition to heating, the Italtherm CITY CLASS 35 F gas boiler is able to provide hot water for the simultaneous operation of two points of analysis (...up to 18.6 l / min). Only high-quality components are used in the design of the device: a primary copper heat exchanger, a stainless steel hot water heat exchanger, a brass hydraulic group, a durable electric three-way valve, a low-noise circulation pump. The boiler is equipped with an innovative gas burner with a wide modulation range of 1:10, the use of which allows you to adjust the power and increase the efficiency of fuel use. A full range of protective systems is provided, including frost protection.
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Italtherm CITY CLASS 35 F 32.4 kW
Energy source:gas
Mount:wall, dual-circuit
Boiler power:32.4 kW, area ~ 259 m²
Combustion chamber:closed, flue 60/100 mm
DHW temperature:from 35 °С, up to 55 °С

A powerful and high-tech gas double-circuit wall-mounted gas boiler with a closed (turbocharged) combustion chamber, a microprocessor control system, an advanced modulating burner and proprietary Intelligent Combustion System technology. It is one of the older models of the Italtherm City Class family. It has a high useful thermal power up to 32.4 kW, demonstrates a decent efficiency.

Such heat output is quite enough to organize heating of detached cottages, as well as office, commercial and household premises with a total area of 25 to 259 m². It is an efficient modern and safe solution that can be installed directly in residential areas. In addition to heating, the Italtherm CITY CLASS 35 F gas boiler is able to provide hot water for the simultaneous operation of two points of analysis (up to 18.6 l / min).

Only high-quality components are used in the design of the device: a primary copper heat exchanger, a stainless steel hot water heat exchanger, a brass hydraulic group, a durable electric three-way valve, a low-noise circulation pump. The boiler is equipped with an innovative gas burner with a wide modulation range of 1:10, the use of which allows you to adjust the power and increase the efficiency of fuel use. A full range of protective systems is provided, including frost protection.

All specifications
Specifications CITY CLASS 35 F
Main
Energy sourcegas
Installationwall
Typedual-circuit (heating and DHW)
Heating area259 m²
Technical specs
Heat output32.4 kW
Min. heat output11.7 kW
Power supply230 В
Power consumption145 W
Coolant min. T35 °С
Coolant max. T80 °С
Heating circuit max. pressure3 bar
DHW circuit max. pressure6 bar
Consumer specs
DHW min. T35 °С
DHW max. T55 °С
Performance (ΔT=25°C)18.6 L/min
"Summer" mode
Heated floor mode
Circulation pump
Boiler specs
Efficiency94 %
Combustion chamberclosed (turbocharged)
Flue diameter60/100 mm / 80/80 for split flue /
Inlet gas pressure20 mbar
Max. gas consumption3.65 m³/h
Expansion vessel capacity8 L
Expansion vessel pressure1 bar
Connections
Mains water intake1/2"
DHW flow1/2"
Gas supply1/2"
Central heating flow3/4"
Central heating return3/4"
Safety
Safety systemsgas pressure drop
water overheating
flame loss
draft control
water circulation failure
frost protection
More specs
Dimensions (HxWxD)727x400x300 mm
Weight34.8 kg
Official Websiteen.italtherm.it
Added to E-CatalogAugust 2017
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Italtherm 2026 - new arrivals, bestsellers, and the most relevant models Italtherm.
Model overview based on user reviews  
The Italtherm CITY CLASS 20 F 19.5 kW gas boiler is a wall-mounted, dual-circuit unit designed for both heating and hot water supply, suitable for areas up to 156 m². It features a closed combustion chamber and a heat output of 19.5 kW, with a high efficiency of 92.7%. Users appreciate the quality components such as the copper heat exchanger and brass hydraulic group, which ensure durability and reliability. The boiler is described as easy to maintain with convenient digital settings, allowing customization of heating intervals. However, some users report that the boiler can be noisy and may require adjustments to reduce frequent cycling. Despite these minor drawbacks, the Italtherm CITY CLASS 20 F is considered a simple and reliable choice for efficient home heating and water heating needs.
Pros

Cons

normal model, nothing special
28 April 2019 
All parts are copper or brass
It works very noisily, vibration is felt.. Replaced the air fan, noise and vibration decreased slightly
just bought Italtherm CITY CLASS 25 F  i recommend it don't buy
The boiler is simple and reliable. I recommend
15 December 2021 
Copper heat exchanger, brass hydraulic group, easy to maintain, all components are of high quality, European. Convenient settings, digital knobs, not mechanics as some reviews say. All intervals can be set in those menus, if it turns on often, depending on the volume and length of the coolant, you can set the heating operation delay as you like. Water heating is good, smooth, there are no temperature changes, enough for 2 points.
A little noisy. With factory settings, the heating turns on (clocks) every minute.
use Italtherm CITY CLASS 25 F few months
Terrible device
30 September 2021 
You won’t sleep with him, or you’ll get used to such a stupid mode of operation
Mechanical twisters
Loud, minimum temperature lights up and turns off every 2 minutes
use Italtherm CITY CLASS 25 F more than year
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