AC and Furnace Installation
Controlled Systems provides professional air conditioning and furnace installation services for homes and businesses across Silicon Valley and the surrounding Bay Area. With more than five decades of experience, we install efficient, reliable HVAC systems tailored to your property’s size, layout, and comfort needs.
What we install:
Central air conditioning systems (split and packaged units)
High-efficiency heat pumps
Gas and electric furnaces
Ductless mini-split systems
Thermostats, zoning systems, and advanced controls
Our installation process:
Evaluate property, existing ductwork, insulation, and electrical capacity.
Perform precise installation—sizing and mounting equipment, connecting refrigerant lines or gas and electrical services, and integrating controls and thermostats.
Test airflow, refrigerant charge, and system controls.
Discuss system features, maintenance recommendations, and filter type
A/C Maintenance
Maintaining your air conditioning unit is crucial for ensuring its optimal performance and longevity. It is generally recommended to have your system professionally serviced at least once a year, typically before the summer season hits. Regular maintenance can prevent minor issues from escalating into major problems, saving you costly repairs in the future and ensuring your system runs efficiently.
Annual A/C Maintenance Includes:
Check Refrigerant Pressure
Test Electrical Components & Controls
Check Blower Assembly & Air Filters
Evaluate Thermostat
For an additional cost we will clean your condenser coils
Just mention when scheduling your appointment.
Furnace Maintenance
Maintaining your furnace yearly with the proper care and cleaning can help extend the life of your system. During a maintenance our HVAC technician will perform a comprehensive system check using specialized tools to help identify potential issues before they become serious. We will clean and adjust components to optimize performance and help your furnace operate more efficiently, which translates to lower energy bills.
Annual Furnace Maintenance Includes:
Thorough Cleaning of Furnace
Inspection of thermostat
Replace Filter
For optimal performance, we suggest you check your filter monthly and replace it at least every three months. If you have pets or allergies, replace it more frequently.
Nest and Thermostat Installation
Our certified technicians handle every step of the installation process to ensure your Nest device is properly integrated with your heating and cooling system and set up for reliable, energy-saving operation.
Evaluate compatibility: Inspect existing HVAC wiring and system to confirm compatibility
Recommend the right Thermostat or Nest: Advise on the appropriate type based on your system, features desired, and budget.
Testing and verification: Run system tests to confirm the thermostat calls for heat/cool correctly, verify equipment cycles properly, and check for any error codes.
Some older or nonstandard control systems may require additional parts or a thermostat adapter. Smart thermostats rely on stable Wi‑Fi for remote features. For commercial or multi-zone systems, specialized configuration may be required.
Ductwork and Air Balancing
Residential and commercial duct repair and installation.
Installation of dampers to adjust air flow to individual zones.
Ductwork
Ductwork distributes conditioned air from the HVAC system to each room and returns air back to the system. Properly designed and installed ducts maintain airflow, temperature consistency, indoor air quality, and system efficiency.
Types: Common configurations include trunk-and-branch, radial, and ductless (mini-split) systems.
Sizing: Ducts must be sized for expected airflow (CFM) and static pressure to avoid excessive noise, reduced capacity, and energy waste. Short, straight runs with gentle bends reduce resistance. Minimize length and number of elbows where possible
Sealing and insulation: All joints, seams, and connections sealed with mastic or UL-rated metal tape.
Air Balancing
Purpose: Air balancing ensures each room receives the correct volume of airflow to meet design temperatures and comfort requirements. Proper balancing reduces hot/cold spots, pressure differences, and excessive system runtime.
Process:
Adjust dampers and registers: Modulate duct and zone dampers, and adjust register positions to deliver target CFM to each space per design values.
Re-measure and iterate: Confirm adjustments by re-measuring airflow and pressure, refining until targets and comfortable room temperatures are reached.
New equipment or renovations: Rebalance after installing new equipment, replacing duct sections, or modifying building layouts.
Benefits:
Improved comfort and consistent temperatures
Increased system efficiency and reduced energy costs
Extended equipment life due to reduced strain
Lower noise levels and fewer complaints in commercial settings
AC Disconnect/Reconnect
We safely disconnect and reconnect your air conditioning system when needed for AC repairs, replacements, remodels, or electrical work. This service preserves system integrity, and protects components.
What’s included:
Power isolation: Safely shut off and lock out electrical power to the outdoor and indoor AC components.
Disconnect of components: Remove electrical and control connections, including hardwired power, disconnect boxes, and communication wiring as needed for the job.
Reconnection and testing: Reconnect electrical, control, and refrigerant lines; restore proper wiring and terminations; recharge refrigerant to manufacturer specifications when applicable. Start system and perform functional tests.
Utilization of Crane
Using a crane for HVAC package unit service is a common and often necessary method for installation, replacement, or major repair of rooftop or hard-to-reach package units. Cranes provide safe, efficient lifting and placement of heavy equipment that cannot be moved by hand, forklifts, or hoists. Proper planning and qualified personnel are required to ensure safety and compliance with local codes.
Rooftop installations or replacements where units are too large or heavy to use stairs, elevators, or roof hatches.
Large commercial package units or residential package units located above first floor or on apartment/condominium roofs.
