HVAC Case Studies — Rivic Heating & Air Conditioning

Forty documented residential and commercial HVAC installations across the Merrimack Valley, organized by city. Each case study reconstructs the scope of work, the diagnostic findings, the equipment selection, the ACCA Manual J load calc reasoning, the permit and inspection sequence, and the measurable post-commissioning outcome. Every project shown here was executed by Rivic Heating and Air Conditioning between 2020 and 2026, permitted through the appropriate municipal building department, and closed with combustion analysis printout or refrigerant charge verification retained in the customer file.

Methuen Case Studies

Rivic’s home city. Twenty of the most detailed installations across the neighborhoods that define Methuen: Tower Hill, Forest Lake, Arlington District, Prospect Hill / Back Bay, the Searles-Tenney-Nevins Historic District, and the newer subdivisions off Route 213 (The Loop).

• Broadway Triple-Decker Furnace Replacement — 1908 three-family on Broadway. Original coal-converted-to-oil forced-air system replaced with three-zone gas furnace and matched Manual D duct rebuild. Winter design-day load 84,000 BTU/hr across three units.
• East Methuen Central AC Installation — 1958 Colonial with no existing central AC. Full ductwork retrofit into finished attic conditioned space, 2.5-ton Carrier Infinity 24VNA6 variable-speed R-454B condenser matched to CNPVP indoor coil.
• Pelham Street Emergency No-Heat Call — 4 a.m. January response, elderly homeowner, 1974 Weil-McLain oil boiler no-heat during nor’easter. Diagnosis: failed 24V transformer plus frozen condensate blowdown line. $186 in parts, boiler operational within 90 minutes.
• Methuen Center Condenser Repair — 2015 Bryant 3-ton R-410A condenser, complete loss of cooling in July heat wave. Failed run capacitor (measured 8 microfarad vs 45 microfarad rated) plus corroded contactor. $340 repair on a system with 8 years of remaining life.
• Searles Castle Area Heat Pump Conversion — 1912 Victorian in the Searles-Tenney-Nevins Historic District. Full Mitsubishi Hyper-Heat conversion, 4-zone MXZ system with historic-preservation-compliant line routing. Mass Save Whole-Home rebate $10,000, HEAT Loan financing.

Lawrence Case Studies

Lawrence is triple-decker country. Pre-1920 wood-frame three-family housing dominates. Oil-to-gas conversion and ductless retrofit are the two workhorses here.

• Tower Hill Victorian Boiler Swap — 1898 Victorian on Tower Hill Lawrence. 1997 Peerless oil boiler replaced with Buderus GB142/45 modulating-condensing, chimney reline, new gas piping from Eversource meter. Effective heating cost drop 41% first winter.
• South Lawrence AC Compressor Replacement — 2012 Goodman 3.5-ton with hard-failed scroll compressor. Warranty covered part, homeowner paid labor. Combustion and refrigerant handling done in compliance with EPA 608 recovery protocols.
• Prospect Hill Emergency Furnace Repair — 1918 triple-decker on Prospect Street. Three-zone Peerless boiler pilot outage during coldest January weekend of 2025. Response time 32 minutes from emergency line. Cracked thermocouple plus corroded LWCO probe replaced.
• Mount Vernon Multi-Family HVAC Retrofit — Six-unit apartment building in Mount Vernon Lawrence. Full boiler replacement plus zone-valve rebuild across all six units. Landlord-financed project with Mass Save Multi-Family Retrofit rebate assistance.
• Downtown Lawrence Ductless Mini-Split Install — 1912 mill-worker triple-decker, no existing cooling, plaster-and-lath walls with no duct pathways. 3-zone Mitsubishi MSZ-FS retrofit with concealed interior line-set routing.

Andover Case Studies

Larger single-family properties predominate. Forced-air with A-coil AC is the dominant configuration. Andover Historic District Commission review is a factor in Old Center installations.

• West Andover Colonial Furnace Installation — 1978 Colonial in West Andover. Aging Lennox 80% AFUE furnace replaced with modulating Lennox SLP99V, lifetime heat exchanger warranty registered.
• Shawsheen Village Central AC Replacement — 1954 Colonial in Shawsheen Village. Original mid-1990s condenser at end of life. Right-sized 2.5-ton Trane XR17 R-454B two-stage installed, latent load correction resolved chronic humidity issue.
• Ballardvale Emergency Boiler Repair — 1912 Colonial in Ballardvale. Buderus G215 oil boiler failed during December cold snap. Aquastat rebuild and burner service restored operation, homeowner deferred replacement decision three winters.
• Andover Center High-Efficiency Heat Pump Install — 1928 Colonial in the Andover Center Historic District. Bosch IDS 2.0 whole-home ducted heat pump conversion, gas backup retained. HDC review passed on first submission.
• Phillips Academy Neighborhood AC Tune-Up — Spring cooling tune-up on a 2018 Carrier Infinity system. Capacitor at 30 microfarad on 35 microfarad-rated component — caught before summer failure. Preventive replacement.

North Andover Case Studies

Old Center historic homes and Lake Cochichewick lakefront residential dominate. Larger properties, more complex systems.

• Old Center Historic Home Boiler Upgrade — 1789 Federal-era home in North Andover Old Center. Cast-iron radiators retained, new Weil-McLain Ultra 155,000 BTU modulating boiler installed, chimney reline through original masonry flue.
• Lake Cochichewick Heat Pump Installation — 2002 lakefront Colonial. Full oil-to-heat-pump conversion using Mitsubishi Hyper-Heat MXZ-5C42NAHZ2 driving five interior zones plus DHW heat pump water heater. All Mass Save rebate tiers activated.
• Downtown North Andover AC Repair — 2010 Bryant 3-ton R-22 system, low refrigerant charge diagnosed via superheat and subcooling. Leak found at line-set flare fitting, repaired and recharged with recovered R-22.
• Route 114 Commercial Rooftop Unit Service — 8-ton Trane Precedent RTU on a small medical office building. Economizer commissioning re-verification and full-system tune-up.
• Machine Shop Village Furnace Replacement — 1902 mill-worker housing in Machine Shop Village. Full ductwork rebuild plus new Carrier 96% AFUE modulating gas furnace, sized to Manual J for post-insulation-upgrade envelope.

Dracut Case Studies

Cape Cods and split-levels on sub-half-acre lots. 1960s and 70s construction with undersized returns is the dominant static-pressure challenge here.

• Kenwood Cape Furnace Installation — 1958 Cape Cod in Kenwood section. Tight utility closet, low ceiling. Compact-cabinet Rheem R802V 80% AFUE furnace fit vertical clearance, matched Manual J of 62,000 BTU/hr.
• Collinsville Central AC Repair — 2016 Goodman condenser, failed contactor and dirty condenser coil combining to trip high-pressure lockout. Cleaned coil and replaced contactor, restored full capacity.
• Navy Yard Village Emergency Heat Call — February no-heat call on a 1994 Trane XV80 gas furnace. Failed inducer motor pressure switch. Same-day parts pickup from regional distributor, homeowner warm by 6 PM.
• Dracut Center Ductless System Install — 1920s bungalow, no ductwork, historic character preserved. Two-zone Mitsubishi MSZ-FS system, wall-mounted cassettes in living room and primary bedroom.
• Broadway Road Heat Exchanger Replacement — 2014 Trane XV95 with confirmed heat exchanger crack visible on Wohler flue camera. Warranty part replacement, extended labor coverage under Rivic 2-year installation warranty.

Haverhill Case Studies

Bradford Victorian housing stock is a signature Haverhill category. Historic Route 125 corridor commercial and Riverside mid-century residential complete the mix.

• Bradford Victorian Oil-to-Heat-Pump Conversion — 1898 Victorian in Bradford. Full oil-to-heat-pump conversion with Bosch IDS 2.0 driving whole-home ducted system. Oil tank removed and site remediated per MassDEP guidelines.
• Riverside Central AC Installation — 1965 ranch in Riverside neighborhood. First-time central AC installation, existing gas furnace kept, matched Lennox XC17 R-454B condenser and Lennox indoor coil.
• Mount Washington Emergency Furnace Repair — 2019 Lennox EL195E gas furnace, gas valve failure during holiday weekend. Warranty part sourced through Lennox emergency parts network, restored heat within 24 hours.
• Downtown Haverhill Boiler Service — 1962 Peerless cast-iron sectional boiler in a downtown Victorian. Annual maintenance service, low-water cutoff rebuild, expansion tank recharge, 30% capacity check.
• Rocks Village Ductless Mini-Split Install — Historic Rocks Village district home. Two-zone Fujitsu Halcyon HFI system with concealed line-set routing preserving exterior character.

Salem NH Case Studies

Cross-border service into Rockingham County. Newer construction in Tuscan Village dominates alongside older housing in Salem Depot.

• Tuscan Village New Construction HVAC — 2022-build townhouse in Tuscan Village. Broan AI 210 HRV retrofit resolved under-spec builder ventilation. ASHRAE 62.2 residential air-change compliance verified.
• Canobie Lake Area Central AC Install — 1985 Colonial near Canobie Lake. Full central AC installation, 3-ton Carrier Infinity variable-speed R-454B matched to new indoor coil and ductwork extension.
• Salem Depot Emergency No-Heat — 1978 Cape near Salem Depot. February no-heat on 2010 Bryant gas furnace. Failed hot-surface igniter replaced, homeowner warm within 90 minutes of dispatch.
• North Salem Heat Pump Upgrade — 2001 ranch in North Salem. Existing electric baseboard heat replaced with Daikin Aurora ducted heat pump system. NH Saves rebate coordination.
• Policy Brook Furnace Replacement — 1996 Colonial in the Policy Brook area. Aging Bryant furnace replaced with Rheem R802V 96% AFUE modulating gas system.

Pelham NH Case Studies

Pelham Village historic homes and the Route 38 residential corridor. Cross-border service from the Methuen office averages 45-minute drive time.

• Pelham Center Colonial Boiler Install — 1834 Federal-era home in Pelham Center. Weil-McLain Ultra 155,000 BTU modulating-condensing boiler installed. Chimney reline through original masonry flue.
• Gumpas Pond Area Heat Pump Conversion — 2004 lakefront Colonial near Gumpas Pond. Full oil-to-heat-pump conversion with Mitsubishi Hyper-Heat 4-zone system.
• Route 38 Emergency AC Repair — July emergency call on a 2014 Trane XR13. Failed capacitor and dirty coil combining to trip thermal protection. Same-visit repair, cooling restored within 2 hours.
• Pelham Village Furnace Tune-Up — Fall heating tune-up on a 2016 Carrier Infinity gas furnace. Combustion analysis: 48 ppm CO air-free, stack temperature 128°F, 10.8% CO2. Passed with margin.
• Willow Street Ductless Install — 1920s bungalow on Willow Street. Two-zone Mitsubishi MSZ-FS9NA installation, no existing ducts.

Why We Document Every Project

Case-study documentation is not marketing. It is post-2018 Merrimack Valley reality. Municipal building departments increasingly require pre- and post-install photo documentation for HVAC permits — a practice that intensified after the September 13, 2018 Columbia Gas over-pressurization event in Lawrence, Andover, and North Andover. Homeowner insurance disclosure at property sale requires proof of code-compliant installation. Manufacturer warranty claims on Carrier, Trane, Lennox, Mitsubishi, and Weil-McLain equipment often require date-stamped installation photos to process. Every Rivic installation is documented because the alternative — undocumented work — creates permit, insurance, and warranty problems that surface years later when the customer can least afford them.

Frequently Asked Questions

Can I visit a completed Rivic installation before I sign a contract?

Yes, with the past customer’s permission. For installation quotes over $8,000, Rivic will connect prospective customers with two or three references from comparable projects in the same or adjacent neighborhood. If you’re quoted a Weil-McLain Ultra conversion in Tower Hill, we can arrange a conversation with a past Tower Hill boiler-conversion customer. If you’re quoted a Mitsubishi Hyper-Heat retrofit in the Arlington District, same principle. Reference verification is a normal part of the Rivic quote process.

How does Rivic decide which case studies to publish?

Selection criteria: (1) the project had a specific measurable outcome (utility bill reduction, humidity control, response time, cost savings vs competitor quote); (2) the technical work involved detail worth documenting (unusual load calc, non-standard equipment selection, historic preservation requirement); (3) the homeowner consented to the case-study documentation, with names abbreviated or aliased for privacy. Not every Rivic project appears here — only the ones with clear teaching value for prospective customers considering similar work.

Are the customer names in Rivic case studies real?

Customer names are abbreviated (first name plus last initial) or fully aliased for privacy protection. Property addresses are described by neighborhood but never street-numbered. Dollar figures, equipment models, permit numbers, and technical specifications are accurate as documented in the project file. Homeowners who want their real names used in a Rivic case study can opt in through Kathleen Brennan at the Methuen office.

Does Rivic have case studies for commercial HVAC work?

Yes. Roughly 15% of Rivic’s project archive is light-commercial: small offices along the Route 213 and Route 114 corridors, retail along Broadway (Route 28), medical and dental practices in Andover and North Andover, and small industrial/automotive shops in South Lawrence and West Methuen. Commercial case studies are marked as such and include ASHRAE 62.1 outdoor air commissioning specifications and Manual N commercial load calc detail.

Can I request a case study for a specific project type I’m considering?

Yes. Call the office at (351) 240-2627 or email info@rivicheatingairconditioning.xyz with a description of what you’re planning, and Kathleen Brennan will pull two or three comparable case studies from the archive. Common request patterns: oil-to-gas conversion in a pre-1940 home, cold-climate heat pump retrofit for a triple-decker, R-454B replacement for a homeowner on a fixed budget, or Mass Save Whole-Home rebate paperwork walk-through.

Contact Rivic Heating and Air Conditioning — Case Study Requests

Case study archive requests, reference-customer introductions, and project-comparable consultations run through Kathleen Brennan at the 225 Broadway office in central Methuen.

• Emergency Line (24/7): (351) 240-2627
• Address: 225 Broadway #306, Methuen, MA 01844
• Email: info@rivicheatingairconditioning.xyz
• MA Refrigeration Technician License: #RT-24518
• MA Home Improvement Contractor: #HIC-191847
• EPA Section 608 Universal: #608U-2007-192874

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