Nicaragua's climate and geography determine the suitability of ERV (Energy Recovery Ventilation) systems in different regions, requiring a comprehensive assessment based on the following factors:

I. Climate Suitability Analysis

Western Lowlands (Savannah Climate)

The average annual temperature is 28-30°C, with low humidity during the dry season (January-May) and sudden increases in humidity during the rainy season (June-December). 

ERV systems can effectively balance ventilation needs during the dry and wet seasons, but be aware that high humidity during the rainy season may increase the risk of condensation.

Recommended Areas: Cities such as Managua (the capital) have dense buildings and a significant urban heat island effect, where ERV can improve indoor air quality.

Central Highlands (Mild Climate)

The average annual temperature is 18°C, with annual precipitation of 1500-2500 mm and large diurnal temperature fluctuations. ERV systems operate efficiently in this stable temperature and humidity 

environment and are particularly well-suited for agricultural facilities in coffee-growing areas (500-2000 meters above sea level).

Eastern Coast (Tropical Rainforest Climate)

With year-round high temperatures and high humidity (annual precipitation exceeding 3,000 mm), ERVs must be mold-resistant and must resist salt spray corrosion (Caribbean side).

II. Geological and Energy Conditions

Geothermal Resource-Rich Areas: Areas surrounding volcanic belts (such as Lake Nicaragua) can utilize geothermal energy to assist ERV dehumidification, but precautions must be taken regarding the 

impact of hydrothermal activity on the lakebed on the equipment foundation.

Power Supply: National voltage is 120/240V, 60Hz, compatible with most ERV equipment, but voltage stability must be considered in remote areas.

III. Ecologically Sensitive Area Restrictions

Lake Nicaragua Basin: Due to the sensitive nature of lake water salinity fluctuations, ERV installations must avoid disrupting closed ecosystems and must utilize a saltwater-free discharge design.

Volcanic Ash Impact Areas: For example, areas surrounding the San Juan Volcano require enhanced dust protection for ERV filters.

IV. Economic and Policy Factors

Priority Areas: Economic centers such as Managua, with their more robust building codes, are more likely to receive government energy efficiency subsidies. Tourist areas: Historical areas like Granada 

require low-noise ERV models to comply with cultural heritage preservation requirements.

In summary, the coffee-growing regions of the central highlands and cities like Managua are the best candidates for ERV systems, while the eastern coastal areas and volcanic lake regions require specialized designs.