Property: 1962 residential single-family, Bradford neighborhood Haverhill
Owner: S.T. (property owner alias)
Scope: Aging gas furnace and central AC replaced with premium Carrier Infinity Greenspeed variable-capacity heat pump using existing ductwork; complete fossil-fuel elimination; installation led by Marcus Devlin, Bradford resident
Timeline: Diagnostic and design 2 weeks, installation 4 days
Investment: $30,800 installed, $10,000 Mass Save Whole-Home Heat Pump rebate, $2,000 IRA 25C federal tax credit, net $18,800; includes Rivic’s 10-year Carrier Infinity manufacturer warranty administration
S.T. owns a 1962 residential single-family property in the Bradford neighborhood of Haverhill. Bradford is a substantial Haverhill neighborhood south of the Merrimack River (the river divides Haverhill into main-side/north-side and Bradford/south-side) with diverse residential development from the mid-20th century subdivision era through more recent construction. Bradford is the largest of Haverhill’s neighborhoods by area given Haverhill’s 33.9 sq mi total footprint (largest city in Rivic’s service area).
Marcus Devlin — Rivic’s service manager and MA Journeyman Gas Fitter with 15 years of experience including specific involvement in the 2018-19 Columbia Gas relight response work — lives in Bradford with his family, in a comparable mid-20th century subdivision-era property approximately 12 minutes from S.T.’s property. Marcus’s residency in Bradford provides first-party neighborhood familiarity for Haverhill installations similar to Ryan Sullivan’s role for Dracut/Kenwood installations.
The 1962 property was significantly renovated in approximately 2005 including HVAC system replacement (20-year current gas furnace and central AC), kitchen renovation, and general modernization. The 20-year current gas furnace and central AC were operational but at end-of-life range with declining efficiency and reliability. Existing ductwork throughout the property from the 2005 HVAC scope in acceptable condition suitable for heat pump conversion.
S.T. requested Rivic assess replacement options with priorities: (1) coordinated replacement of the aging 2005-era HVAC systems given both approaching end-of-life range, (2) fossil-fuel elimination through heat pump conversion for Mass Save Whole-Home Heat Pump rebate opportunity, (3) premium equipment tier matching Bradford neighborhood market context, (4) preference for Marcus Devlin as installation lead given his Bradford residency (S.T. specifically requested Marcus for the assessment scope).
Marcus Devlin conducted the initial diagnostic assessment. Ryan Sullivan handled premium equipment specification support given the premium equipment tier scope.
Key findings: (1) 20-year 2005 gas furnace with declining efficiency (approximately 76-82% effective from 90% AFUE nameplate) but heat exchanger inspection did not reveal cracks or critical failure indicators, (2) 20-year 2005 central AC with declining efficiency and typical refrigerant charge decline for the equipment age, (3) existing ductwork from 2005 scope in good condition suitable for heat pump conversion, (4) 200A National Grid electric service adequate for heat pump installation with capacity margin, (5) property configuration well-suited to ducted heat pump installation replacing existing furnace/AC location.
ACCA Manual J load calculation determined property heating load at 4°F winter design of approximately 62,000 BTU/hr and cooling load at 88°F summer design of approximately 42,000 BTU/hr. Marcus recommended 5-ton premium cold-climate heat pump installation matching the calculated loads with margin.
Rivic recommended premium Carrier Infinity Greenspeed variable-capacity heat pump 5-ton nominal capacity with existing ductwork utilization. Equipment specification: (1) Carrier Infinity 25VNA0 variable-capacity outdoor unit with cold-climate performance verified for 4°F winter design, (2) Carrier Infinity communicating platform integration with 5-stage part-load modulation, (3) Carrier Infinity indoor air handler with ECM variable-speed blower, (4) Carrier Infinity Touch communicating thermostat with mobile app integration, (5) 10-year Carrier Infinity manufacturer warranty on parts + compressor with Rivic warranty administration.
Existing ductwork utilization: minor duct sealing improvements at accessible joints; supply and return grille inspection confirmed adequate condition from the 2005 installation scope; variable-speed ECM blower matched to Carrier Infinity variable-capacity operation for optimized airflow.
Gas furnace and central AC decommissioning: 20-year 2005 equipment removed with proper refrigerant recovery per EPA Section 608; gas piping capped at previous furnace location. Marcus’s MA Journeyman Gas Fitter licensure appropriate for the gas equipment decommissioning scope.
Marcus’s residency in Bradford contributes specific first-party knowledge to installations in the neighborhood:
Similar to Dracut and North Andover, Haverhill was NOT in the September 13, 2018 Columbia Gas over-pressurization affected zone (which affected portions of Lawrence, Andover, and southern Methuen only). Standard Haverhill gas installations do not require amended-code documentation from the 2018 event. Haverhill is served by Eversource Gas of Massachusetts (formerly Columbia Gas after the 2020 sale) with standard MA Fuel Gas Code (527 CMR 5.00) compliance and standard installation practices.
Installation completed over 4 days including outdoor Carrier Infinity 25VNA0 placement on side-yard concrete pad (adjacent to original central AC condenser location), indoor Carrier Infinity air handler installation in basement replacing gas furnace location, ductwork sealing improvements, refrigerant charging, communicating platform commissioning, and mobile app configuration. Marcus Devlin led the installation team on all 4 days.
Post-installation first-year operational verification: heat pump operated reliably through the first winter including cold-snap periods with outdoor temperatures reaching 2°F to 5°F range. Carrier Infinity variable-capacity operation delivered efficient part-load performance across seasonal load patterns with communicating platform coordination.
Post-installation first-year utility monitoring: total electric operating cost approximately $1,540 for combined heating and cooling. Previous year utility costs: gas heating approximately $1,720 (declining efficiency 20-year furnace), electric cooling approximately $620 (declining efficiency 20-year AC), combined approximately $2,340/year. Annual operating cost reduction approximately $800/year.
Bradford Haverhill and other Haverhill neighborhood HVAC service including 2000s-era gas furnace and central AC replacement with premium cold-climate variable-capacity heat pump, existing ductwork utilization with ECM blower upgrade, Marcus Devlin resident senior technician leadership for Bradford installations, National Grid electric service coordination for Haverhill utility framework, Mass Save Whole-Home Heat Pump rebate coordination for complete fossil-fuel elimination, IRA 25C federal tax credit coordination, and 10-year Carrier Infinity manufacturer warranty administration all route through our 225 Broadway #306 office in downtown Methuen. This case study represents a specific installation completed for S.T.; individual property assessments determine equipment specification and installation scope.