Excess Moisture

Excess Moisture | Dehumidifier Installation | Heating and Air Conditioning | Mascot

Life in Mascot means humid summers, damp basements and the occasional musty odor that never quite goes away. HEP’s excess moisture experts bring relief with professional dehumidifier installation that’s tailored to your home’s square footage, HVAC layout and everyday routine. From crawl spaces to upper-floor living areas, we integrate high-efficiency units directly into your heating and air system, quietly pulling gallons of water from the air while you sleep, work and relax.

The result? Crisp, comfortable rooms, lower energy bills and a dramatic reduction in mold, mildew and allergens. Backed by friendly technicians, transparent pricing and our “Fixed Right or It’s Free” guarantee, HEP turns your Mascot residence into the fresh, dry haven it should be—season after season.

FAQs

Why is excess moisture such a common issue in Mascot, and what damage can it cause?

Mascot’s proximity to Botany Bay means warm sea breezes often carry high humidity inland. When that moist air enters an air-conditioned space, it cools rapidly and releases water vapour onto walls, ceilings and ductwork. Persistent humidity over 60 % RH encourages mould, mildew, dust-mites and wood rot, and can corrode electronics and HVAC components. A dedicated dehumidifier keeps indoor relative humidity in the ideal 45–55 % range, protecting the building fabric, furnishings and occupants’ health.

How will a whole-home dehumidifier integrate with my current heating and air-conditioning system?

We install the dehumidifier in the return-air side of your existing ducted HVAC. Moist air is drawn through the unit, where a refrigeration coil condenses and drains away excess water before the air is reheated to room temperature and sent back through the supply ducts. A humidistat, either standalone or built into your smart thermostat, monitors RH and tells the dehumidifier when to cycle. This approach treats all conditioned rooms evenly without adding extra wall units or noise.

What capacity dehumidifier do I need and how do you size the equipment?

Sizing depends on floor area, ceiling height, typical indoor RH, number of occupants, and sources such as bathrooms, kitchens and indoor pools. During our free site assessment we measure current RH, inspect insulation and duct sealing, and calculate air-changes-per-hour. Residential properties in Mascot usually need 70–120 L/day removal, while light-commercial spaces may require 120–200 L/day. Oversizing wastes energy; undersizing won’t keep up in summer. We provide a load calculation report so you know exactly why a particular model is recommended.

What does the installation process involve and how long will I be without heating or cooling?

A standard retrofit takes 4–6 hours. We: 1) isolate power and remove a small section of return duct; 2) mount the dehumidifier on vibration pads or roof hangers; 3) connect insulated flex duct and seal all joints; 4) run a dedicated condensate drain with a backflow trap to a nearby waste line; 5) wire the humidistat to the HVAC control board; 6) restart the system and commission. Your heating/cooling is offline for less than two hours and we always schedule around your timetable to minimise disruption.

Will running a dehumidifier increase my energy bill?

Surprisingly, overall costs often drop. Moist air feels warmer in summer and colder in winter, so occupants adjust the thermostat more aggressively. By keeping humidity in check you can raise the cooling set-point 1–2 °C and lower winter heating by the same margin, saving 5–7 % on HVAC energy. The dehumidifier itself typically draws 0.4–0.8 kW; in a 200 m² home that’s about $8–$15 per month at current Ausgrid rates. Most clients see a net saving plus reduced wear on their air-conditioner’s compressor.

What maintenance is required and do you offer ongoing servicing?

Routine tasks are simple: replace or clean the dehumidifier’s MERV-8 or MERV-11 intake filter every 3–4 months, check the condensate drain for blockages and keep the humidistat setpoint at 50 %. Once a year we perform a full service: coil cleaning, refrigerant pressure check, electrical inspection, drain flush and firmware updates for smart models. We can bundle this with your annual HVAC tune-up at a discounted rate, giving you one point of contact and 24/7 breakdown support throughout Mascot and the eastern suburbs.