Boiler Repair, Install & Replacement in Johnston, RI
October 9, 2026 — Evergreen Services
Boiler Repair, Install & Replacement
Johnston, RI
Job Details
ServiceBoiler Repair, Install & Replacement
LocationJohnston, RI
Customer typeLandlord / rental
OutcomeCompleted — multi-day
SeasonFall
DateOctober 9, 2026
Job Photos
Shut down existing boiler power.
Shut down existing water to boiler and drain.
Label piping to ensure proper wiring upon installation of new system.
Remove and dispose of existing Navien High Efficiency Combi Boiler that has been compromised due to water damage.
Purchase and install one new Navien Hydronic Condensing High Efficiency Boiler
95% AFUE Modulating Natural Gas Fired Combi Boiler. Model: NCB-240/130H
(Piping for dwelling not in mechanical room supply and return and domestic water connecting to boiler are to remain. Piping on wall with boiler up to ceiling is to be replaced to bring boiler up to local mechanical code and manufacturers recommendations.)
Purchase and install each of the following devices and piping for newly installed boiler to
meet local mechanical code: 1. Manifold Navien 2. Expansion Tank 3. Watts 911s9D x Press
4. 1 - Circulator 007E IFC Taco/Grundfos/Aqua-motion 5. 1 - Isolation Flange (1-pair for each circulator)
6. Scale Inhibitor (Domestic Water Inlet) & Particle Filter (Return Line)
Purchase and install all necessary PVC Piping and Fittings to connect new boiler to 2” PVC Venting using existing penetrations in dwelling. Evergreen Services will use a two-pipe venting system to allow for exhaust outside of dwelling to be pointed in opposite direction of fresh air to ensure no contamination.
Purchase and install all necessary Pro Press, Copper Piping, Valves, and fittings to connect newly installed Navien Boiler to existing supply and return. Connect newly installed boiler to existing zone of Central Heating and Domestic Hot Water. Existing heat source throughout home is all to remain. Purchase and install all necessary Line Voltage for newly installed boiler, circulator, and existing circulator control. (Circulator control may be removed to have Navien boiler communicated with Thermostats directly.) Purchase and install one new Condensate Pump with Neutralizer per local mechanical code.
Need Boiler Repair, Install & Replacement in Johnston?Evergreen Services serves Johnston and the surrounding area. Licensed, insured, and locally experienced.Get a Free Estimate