Webb Avenue Apartments
Cohesive Mechanical implemented scalable HVAC and energy systems that serve current affordable units and will expand seamlessly to future market-rental phases.
Webb Avenue Apartments
Overview
Cohesive Mechanical is the mechanical partner for Webb Avenue, a multi-phase rental development in Chilliwack. Phase One includes a 67-unit affordable rental building with energy-efficient design and adaptable suites. Future phases will expand to over 100 units, providing both affordable and market-rate housing.
Cohesive Mechanical was engaged to provide HVAC design and installation for these projects, ensuring comfortable, energy‑efficient living spaces across multiple phases.
Key Challenges
Affordable and market‑rate units – Phase 1’s RCFi financing required rents capped at 30 % of median income and a portion of units accessible. Mechanical systems had to minimize operating costs while meeting accessibility requirements.
Multiple phases and densities – The site will eventually support two five‑story buildings totaling 108 units. Systems had to be scalable and adaptable for future expansion.
Energy‑efficiency targets – CMHC funding encourages innovation and sustainability, so high‑performance HVAC was essential.
Our Solution
High‑performance HVAC – For the 67‑unit building, Cohesive Mechanical supplied condensing boilers and in‑suite hydronic fan‑coil units for heating, combined with variable‑speed heat pumps for cooling. A centralized energy‑recovery ventilator supplies fresh air to corridors and suites.
Accessible controls – In accessible and adaptable units, thermostats and controls were mounted at wheelchair‑friendly heights, and ductwork/vent locations were adjusted to avoid interference with mobility aids.
Scalable plant design – Boiler and chiller capacity were sized to support Phase 1 while allowing additional modules to be added for the future 108‑unit building. Common mechanical rooms were designed to accommodate expansion.
Results
Affordable, comfortable housing – The first 67 families enjoy modern apartments with stable rental rates; mechanical systems ensure low utility bills and good indoor air quality.
Accessible design – Accessible and adaptable units meet or exceed CMHC guidelines, with mechanical systems supporting mobility needs.
Future‑ready infrastructure – Mechanical plants and distribution systems are prepared for the 108‑unit expansion planned for Webb & Kosumi, reducing future cost and disruption.
Conclusion
The Webb Avenue projects illustrate how purpose‑built rental housing can be both affordable and high‑quality. Cohesive Mechanical’s scalable solutions support residents’ comfort today while laying the groundwork for expanded, higher‑density housing in Chilliwack’s growing Alder/Webb neighborhood.
