Oil to gas conversion with installation of new high efficiency condensing boiler and indirect hot water heater. 

Details of the installation: Viessmann Vitodens 100W with Viessmann Vitocell 300 indirect hot water heater. The system is operating on outdoor reset control. Domestic hot water operates on domestic hot water priority. 

Property Type: 2 Family Brownstone
Property Size: 3,960 sq ft

Fuel: Gas
Boiler: Viessmann Vitodens 100W - 118,000 btu Boiler
Domestic Hot Water Production: Viessmann Vitocell 300 Indirect hot water heater
Other equipment:

  • Variable frequency drive pumps : taco bumble bee system pumps & grundfos alpha pump
  • Dirt mag to catch rust and dirt from the system
  • Spirovent air eliminator

System: Hot Water (hydronic)


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Before: taking the existing boiler apart

Before: water heater

Attention to detail: the fresh air intake is enclosed in cast iron to match the building facade