Light-commercial HVAC across the Merrimack Valley commercial corridors: Route 213 (The Loop), Route 114, Route 28 (Broadway), Route 125, and the mixed-use corridors of Andover Street and Downtown Lawrence. Rivic handles new packaged rooftop unit installations, split-system commercial installations, quarterly preventive maintenance contracts, and 24/7 emergency response for property managers, small-business owners, medical and dental practices, retail, restaurants, small manufacturing, and multi-tenant office buildings up to roughly 25 tons of installed cooling capacity.
Diego Ramirez handles the majority of commercial dispatch (bilingual English/Spanish for the Lawrence and South Lawrence commercial base). Marcus Devlin (MA Journeyman Gas Fitter #JGF-30521) handles commercial hydronic and gas piping work under 527 CMR 5.00 as amended. Andrew Samples runs complex commercial diagnostics and larger installations. All commercial installations follow ACCA Manual N (commercial load calculation) rather than Manual J (residential), with outdoor air commissioning per ASHRAE 62.1 rather than 62.2.
Route 114 corridor between Andover and North Andover is thick with 2,000 to 8,000 square foot professional office buildings — law practices, insurance offices, real estate brokerages, dental practices, physical therapy clinics. Typical HVAC: 3 to 8-ton packaged rooftop unit (Trane Precedent XL 4-ton, Carrier 48HC 5-ton) with economizer providing free cooling below 55°F outdoor. Zone controls if multi-tenant. Manual N cooling load calc typically shows 350 to 450 square feet per ton for occupied office space. Emergency response scenarios: no-heat during winter tenant complaint call, no-cool during summer heat wave, and economizer stuck open (making the space too cold and driving up heating costs).
Broadway (Route 28) through Methuen and the Downtown Lawrence retail corridor. Retail spaces 1,200 to 5,000 square feet with high customer traffic loads and door-open transient heating/cooling loss. Restaurants add exhaust hood makeup air (Massachusetts Fuel Gas Code requires specific makeup air calculation for gas-fired cooking equipment). Typical HVAC: 5 to 10-ton RTU sized to accommodate occupant load surges during meal service and retail rush hours. Emergency response scenarios: exhaust hood failure during dinner service, condenser failure during summer weekend, and gas leak on a restaurant water heater (post-fire-department diagnostic).
Andover, North Andover, and Methuen medical practices operate to specific ASHRAE 170 (Ventilation of Health Care Facilities) requirements. Higher outdoor-air ventilation rates than commercial baseline, HEPA filtration in specific procedure rooms, positive/negative pressure isolation depending on procedure category. Typical scope: multi-zone split system or multiple RTUs with zoned controls, ASHRAE 170-compliant outdoor air commissioning documented on each maintenance visit, MERV 13 minimum filtration with MERV 14/15 available.
South Lawrence and West Methuen automotive shops, print shops, machine shops, and light-manufacturing facilities along the Route 213 and I-495 corridors. Process cooling loads that residential contractors miss. Ventilation for hazardous processes (paint booth, welding, machining coolant vapor) under OSHA and Massachusetts DEP requirements. Typical scope: 10 to 25-ton RTU with process-appropriate ventilation and combustion makeup air calculation.
Property management scenarios: 6-tenant office buildings on Route 213, 4-suite medical office parks off Route 114, mixed retail-residential downtown Lawrence buildings. Central chilled water plants or distributed RTU systems depending on building age and infrastructure. Quarterly service contracts with per-tenant sub-billing where required.
Commercial service contracts specify response windows because a restaurant with a failed condenser during Saturday dinner service, or an office building at 82°F on a Monday afternoon in July, is losing revenue by the hour. Rivic emergency dispatch response inside Methuen and Lawrence: under 2 hours during business hours, under 4 hours overnight. Multi-year contract customers receive priority dispatch that bumps them ahead of walk-in emergency calls.
Post-COVID commercial ventilation requirements have tightened. ASHRAE 62.1-2022 outdoor air commissioning documentation is increasingly demanded by insurance carriers, tenant representatives, and building health assessments. Every Rivic quarterly maintenance visit generates documented outdoor air CFM verification per occupant per ASHRAE 62.1 — retained in the customer file and available for compliance verification requests.
Property managers with multiple Merrimack Valley locations get consistent service across all sites through a single contract and single point of contact (Kathleen Brennan). Documentation format, service intervals, and technician competency remain the same whether the site is a Methuen office building, a Lawrence retail suite, or a North Andover medical practice.
Commercial gas-fired equipment (rooftop unit heat sections, unit heaters, gas-fired water heaters, restaurant cooking equipment gas piping) in Lawrence, Andover, and North Andover falls under the post-2018 527 CMR 5.00 amendments. Marcus Devlin worked the 2018-19 Columbia Gas emergency relight response and carries current Journeyman Gas Fitter licensing under the amended code.
Commercial service contract inquiries, RTU installation quotes, and property management consultations route through the 225 Broadway office in central Methuen. Kathleen Brennan handles commercial contract administration.