Features & Benefits
Eco-Friendly R-32 Refrigerant
The DZ4SQ uses R-32 refrigerant, offering efficient heat transfer while reducing environmental impact for more sustainable home comfort.
Reliable Scroll Compressor with CoreSense Diagnostics
Equipped with a dependable scroll compressor and CoreSense monitoring, this system detects abnormal conditions early, helping protect your unit and maintain consistent performance.
Durable Coil & Tubing Design
Smaller 1.5–3.5 ton units feature 5 mm copper tubes, while larger 4–5 ton units use 7 mm tubing for improved heat transfer and efficiency.
Quiet Operation & Sound Mitigation
High-density foam compressor sound blankets (on smaller models) reduce noise, while the removable grille-style top and Venturi airflow design enhance coil efficiency and contribute to quieter operation.
Factory-Installed Service Components
Includes key pre-installed components such as bi-flow liquid line filter drier, suction accumulator, crankcase heater, muffler, and service valves with easy gauge access.
Precharged for Short Line Runs
Factory pre-charged for up to 15 ft of tubing, making shorter installations simple and efficient.
Durable Cabinet & Maintenance Access
The nickel-gray powder-coated cabinet (500-hour salt spray tested) allows top and side maintenance access, with a corrosion-resistant design and easy control panel access.
Time-Delay Defrost Logic
Ensures quiet, controlled defrost cycles in heating mode, providing stable comfort in colder conditions.
Warranty & Registration
Daikin provides a 12-Year Parts Limited Warranty on the DZ4SQ when properly registered.
To maintain full warranty coverage:
Installation must be performed by a licensed, certified HVAC technician
The system should be registered with Daikin (typically within 60 days of installation)
Annual maintenance must be performed by a qualified professional
All installation and usage guidelines must be followed
At TopCare HVAC Mississauga, we ensure your DZ4SQ is installed according to Daikin’s standards to protect your warranty and investment.
Installation, Maintenance & Repair (Mississauga)
Professional Installation
Our installation process includes:
Heat and cooling load calculations for precise sizing
Matching indoor units, coils, and ductwork
Proper refrigerant charging and airflow balancing
Electrical and control system checks
Full system start-up, testing, and verification
Preventative Maintenance & Tune-Ups
Annual service helps keep your system running efficiently and includes:
Cleaning indoor and outdoor coils
Inspecting and tightening electrical connections
Checking refrigerant levels and detecting leaks
Calibrating thermostats and verifying airflow
Running CoreSense diagnostics to detect early issues
Repairs & Troubleshooting
Our certified technicians handle performance issues, defrost problems, sensor or control faults, using Daikin-approved diagnostic methods and OEM parts for reliable repair.
Upgrades & System Integration
Planning to add smart thermostats, improve ductwork, or expand system capacity? We ensure seamless integration while maintaining system efficiency and warranty compliance.
Frequently Asked Questions (FAQs)
Q: Is the DZ4SQ right for my home size?
A: Yes — with capacities from 1.5 to 5 tons, it can suit many homes when properly sized.
Q: How efficient is it?
A: Up to 14.3 SEER2 (cooling) and 7.5 HSPF2 (heating), depending on model and conditions.
Q: What refrigerant does it use?
A: R-32 refrigerant, which is more eco-friendly than older options.
Q: How quiet is the system?
A: Sound mitigation features like the compressor blanket and grille design reduce noise; actual decibel levels depend on model and installation.
Q: What warranty is included?
A: 12-year parts warranty, when installation, registration, and maintenance requirements are met.
Q: How often should it be serviced?
A: At least once per year to maintain efficiency, performance, and warranty coverage.
Why Choose TopCare HVAC for DZ4SQ
Certified Daikin installers experienced with split-system heat pumps
Serving Mississauga, Oakville, Burlington, and Milton
Transparent pricing, financing options, and no hidden fees
Maintenance plans and fast, reliable repair services
Trusted locally for quality workmanship and customer satisfaction
Ready to install a Daikin DZ4SQ heat pump in your Mississauga home?
Contact TopCare HVAC Mississauga today for a free quote, home assessment, or to schedule installation or service. We’ll ensure your system is properly sized, expertly installed, and supported for years of efficient, reliable comfort.
