River Road Andover Corporate Office Tenant Improvement — Case Study

Property: Approximately 4,800 sq ft office suite tenant improvement within a larger multi-tenant corporate building, River Road corridor Andover
Tenant: W.C. (corporate tenant alias)
Scope: Dedicated tenant HVAC installation for open-plan office, conference rooms, and reception area with coordination to existing building master HVAC system; 6-zone Mitsubishi CITY MULTI VRF configuration
Timeline: Diagnostic and design 4 weeks (including building coordination assessment), installation 10 days scheduled around tenant occupancy
Investment: $52,400 installed, $10,000 Mass Save Commercial rebate, $8,000 estimated IRA 179D commercial building deduction, net $34,400

Situation

W.C. is a professional services firm (approximately 45 employees) leasing an approximately 4,800 sq ft office suite within a larger multi-tenant corporate building on the River Road corridor Andover. The River Road corridor hosts several major corporate campuses and multi-tenant office buildings serving pharmaceutical, biotech, technology, and professional services firms across the Merrimack Valley business community.

Existing building HVAC configuration: central variable-air-volume (VAV) system serving the multi-tenant building with per-tenant thermostat zones. W.C.’s office suite had four VAV zones with adequate baseline cooling and heating but with significant zone-level comfort variations reported by employees: some zones consistently too warm, others too cool, poor humidity control during shoulder seasons, and limited response to individual employee comfort preferences.

W.C. leadership had been receiving employee comfort complaints for approximately 18 months and identified HVAC comfort as a specific issue during the firm’s employee satisfaction survey. The firm operates in a competitive professional services market where office environment quality contributes to employee retention and productivity. W.C.’s lease with the building landlord included tenant improvement (TI) allowance provisions permitting dedicated tenant HVAC installation coordinated with the existing building master system.

W.C. requested Rivic assess options for dedicated tenant HVAC installation with priorities: (1) improved zone-level comfort control across the office suite’s varying zone configurations, (2) coordination with existing building master HVAC system to avoid conflicts or building envelope issues, (3) minimize business operational disruption during installation given the firm’s ongoing client work, (4) reasonable capital cost with strong ongoing operating cost economics reflecting the firm’s long-term lease commitment.

Diagnostic and Assessment

Andrew Samples conducted the initial diagnostic assessment including building coordination meetings with the landlord’s property management. Ryan Sullivan handled VRF equipment specification given his familiarity with commercial multi-zone installations.

Key findings: (1) existing building VAV system operational and functional but with the zone-level comfort limitations reported by W.C. employees consistent with typical mid-tier VAV comfort performance, (2) office suite floor plan configuration including open-plan primary work area, three conference rooms, reception area, and small break room — variable zone usage patterns and occupancy densities favored dedicated multi-zone VRF over VAV zone control, (3) rooftop space available for dedicated tenant outdoor condenser placement coordinated with existing building rooftop infrastructure, (4) suspended ceiling in office suite suitable for concealed ceiling cassette installation, (5) building landlord coordination confirmed dedicated tenant HVAC installation permitted under lease TI provisions with landlord approval on rooftop condenser placement and interior installation scope.

ACCA Manual J commercial load calculation determined office suite cooling load at 88°F summer design of approximately 68,000 BTU/hr including internal gains from occupancy and equipment (typical professional services office has approximately 200-300 W/sq ft internal gains from computers, lighting, and occupancy). Heating load at 4°F winter design approximately 42,000 BTU/hr (reduced compared to residential given internal gain contribution during occupancy hours).

Solution: 6-Zone Mitsubishi CITY MULTI VRF with Building Coordination

Rivic recommended a Mitsubishi CITY MULTI VRF system with six indoor units matched to office suite zone configuration: (1) primary open-plan work area 24,000 BTU/hr concealed ceiling cassette (larger capacity addressing peak occupancy and equipment loads), (2) large conference room 18,000 BTU/hr concealed ceiling cassette, (3) medium conference room 12,000 BTU/hr concealed ceiling cassette, (4) small conference room 9,000 BTU/hr concealed ceiling cassette, (5) reception area 9,000 BTU/hr concealed ceiling cassette, (6) break room 9,000 BTU/hr concealed ceiling cassette. Total outdoor unit capacity 78,000 BTU/hr providing capacity margin for peak load conditions.

Building master HVAC coordination: existing VAV zones for W.C.’s office suite disabled at the building master system to prevent operational conflict with new dedicated tenant HVAC; W.C.’s office suite thermal envelope maintained at building master system minimum outdoor air ventilation compliance (approximately 20 CFM per occupant per ASHRAE 62.1 minimum ventilation requirement); coordination verified with landlord’s building HVAC service contractor.

Outdoor condenser placement: rooftop location coordinated with landlord and existing building rooftop mechanical infrastructure; condenser placed with adequate service access clearance and proper drainage. Refrigerant line-set routing: through existing tenant utility chase from suite to rooftop.

Business Operational Coordination During Installation

Rivic coordinated installation scheduling with W.C.’s operations manager to minimize business disruption. Approach: (1) primary installation work scheduled during evenings and weekends when possible, (2) rooftop condenser installation coordinated with landlord for weekend scheduling to minimize noise disruption to other building tenants, (3) office suite ceiling cassette installation completed in phases with W.C. temporarily relocating specific zones during their individual installation days (approximately 1 day per cassette for installation and initial commissioning), (4) daily coordination with W.C.’s operations manager to adjust scheduling for unexpected client meetings or firm priorities.

Installation completed over 10 business days with W.C. maintaining approximately 90% normal office operating scope throughout (some individual zone downtime during specific cassette installation days but no whole-suite operational disruption).

Outcome

Post-installation first-year operational verification: office suite comfort dramatically improved across all zones with consistent temperature control matching individual zone thermostat setpoints. Employee comfort feedback (through W.C.’s subsequent employee satisfaction survey) shifted from previous consistent HVAC comfort complaints to positive feedback on the new dedicated tenant HVAC system. W.C. leadership identified the comfort improvement as a meaningful contributor to office environment quality.

Ongoing Operating Cost Change

W.C.’s office suite electric usage before dedicated tenant HVAC installation was included in the building’s aggregate HVAC operating cost allocation (approximately $3,600/year based on lease allocation methodology). Post-installation dedicated electric metering for the tenant HVAC scope shows approximately $2,800/year for combined heating and cooling. Estimated annual operating cost reduction approximately $800/year, though direct comparison is imperfect given the transition from allocated building-wide cost to dedicated tenant meter.

Investment Summary

• Total installation cost: $52,400 (including premium Mitsubishi CITY MULTI equipment, installation labor, refrigerant charging, commissioning, building coordination, landlord coordination scope)
• Mass Save Commercial rebate: $10,000 (commercial VRF installation with fossil-fuel elimination on tenant HVAC scope)
• IRA 179D commercial building deduction: approximately $8,000 estimated tax benefit (W.C.’s tax advisor handling actual application; final amount depends on building efficiency achievement)
• Net investment: $34,400 after Mass Save Commercial rebate and estimated IRA 179D deduction
• Annual operating cost estimated reduction: approximately $800/year (imperfect comparison given transition from allocated to dedicated metering)
• Additional value: substantial employee comfort improvement contributing to office environment quality; 12-year Mitsubishi Diamond Contractor warranty coverage; long-term operational reliability matching W.C.’s lease horizon

Frequently Asked Questions About This Case Study

Can Rivic complete tenant improvement HVAC installation for my Andover corporate office or other Merrimack Valley multi-tenant building?

Yes for tenant improvement scope with landlord coordination. Similar TI HVAC installations require: landlord approval on rooftop or side-yard outdoor condenser placement and interior installation scope per lease TI provisions, coordination with existing building master HVAC system to avoid operational conflicts, adequate tenant electric service or coordination with landlord on service upgrade if needed, and operational scheduling coordination to minimize business disruption. Rivic handles landlord coordination as part of installation project management. Kathleen Brennan coordinates Mass Save Commercial rebate and IRA 179D deduction scope. Typical installation range for River Road or comparable Andover corporate TI HVAC: $32,000-$68,000+ depending on suite size, zones, equipment tier, and building coordination complexity.

How does dedicated tenant HVAC coordinate with existing building master VAV system?

Building master system coordination requires specific attention to zone control isolation and ventilation continuity. Rivic’s approach: (1) existing VAV zones for the tenant suite disabled at the building master control system to prevent operational conflict with new dedicated tenant HVAC (landlord’s building HVAC service contractor typically handles the master system modification), (2) tenant suite thermal envelope maintained at building master system minimum outdoor air ventilation compliance (typically 20 CFM per occupant per ASHRAE 62.1 minimum ventilation), (3) commissioning includes verification that dedicated tenant system and building master system operate cooperatively without pressure conflicts or ventilation disruptions, (4) ongoing operational coordination between tenant HVAC contractor (Rivic for ongoing service) and building HVAC service contractor as needed. Andrew Samples handles building coordination on TI installations.

Why 6-zone VRF instead of fewer larger zones?

Multiple factors favored 6-zone configuration: variable zone usage patterns across professional services office (open-plan work area vs conference rooms vs reception) benefit from independent zone control; internal gains vary substantially across zones (conference rooms empty most of day then peak during meetings; reception area consistent occupancy during business hours; open-plan work area high sustained occupancy); individual employee comfort preferences accommodated better with more zones; variable-capacity VRF operation with 6 zones enables better part-load efficiency than fewer larger zones operating at capacity. The trade-off is higher initial installation cost with 6 zones vs fewer zones; W.C.’s employee comfort priority and long-term lease commitment favored the higher zone count for better comfort outcomes.

What’s the typical business disruption during tenant improvement HVAC installation?

Rivic minimizes business disruption through careful scheduling coordination. Approach: primary installation work during evenings and weekends when possible; rooftop condenser installation coordinated with landlord for weekend scheduling to minimize noise; office suite ceiling cassette installation completed in phases with temporary zone relocations during specific cassette installation days (approximately 1 day per cassette); daily coordination with tenant operations manager to adjust for unexpected priorities. Typical tenant maintains 80-95% normal office operating scope throughout 8-14 day installation timeline depending on suite size and configuration. Rivic coordinates specific installation scheduling with each tenant based on their operational priorities and constraints.

What’s the typical cost range for Andover corporate tenant improvement HVAC installations?

Typical range: $32,000-$68,000+ depending on suite size, zones, equipment tier, and installation complexity. This case study’s $52,400 total reflects premium Mitsubishi CITY MULTI equipment with 6-zone configuration in approximately 4,800 sq ft suite with building coordination scope. Smaller office suite TI installations (2,000-3,000 sq ft with 3-4 zones) typically cost $28,000-$42,000; larger suite installations or premium equipment configurations can cost $58,000-$88,000+. Mass Save Commercial rebate typically $8,000-$15,000 depending on qualifying scope; IRA 179D commercial building deduction varies based on installation efficiency and total scope. Kathleen Brennan handles Mass Save Commercial and IRA 179D coordination as part of installation project management.

Contact Rivic Heating and Air Conditioning — Andover Corporate Commercial HVAC

Andover corporate commercial HVAC service including dedicated tenant HVAC installation for River Road corridor and other multi-tenant corporate buildings, building master VAV system coordination, landlord coordination for rooftop outdoor condenser placement and interior installation, operational scheduling to minimize business disruption during installation, Mass Save Commercial rebate coordination, and IRA 179D commercial building deduction coordination all route through our 225 Broadway #306 office in downtown Methuen. This case study represents a specific installation completed for W.C.; individual tenant property assessments determine equipment specification and installation scope.

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